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FAQ on Modifying the Toyota Above-mentioned

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 31 December 18:00   FAQ on Modifying the Toyota Supra

     What does BPU angle for? (BPU is a brand of SupraStore.com)

    Basic Achievement Upgrades. These modifications are: A abounding breadth three inch down-pipe (with or with-out top breeze cats), 3 (75mm) or bigger cat-back bankrupt system, aloft addition (18psi), and the appropriate addition cut apache (GReddy BCC) bare to accomplish that addition after activating the branch ammunition absolute at 14-15psi. These are the modifications that accept accurate to accommodate the best HP-to-$$$ ratio.

    What does the + beggarly if anyone says BPU+? And what is APU?

    That stands for any added ability bearing modifications additional than the basal BPU modifications. One "+" refers to Adj. Cam Apparatus and under-drive pulleys, the additional "+" refers to a Ammunition controller, ECU upgrade, etc. For instance, a Above-mentioned with the BPU modifications, additional a front-mount intercooler, would be alleged BPU+. If you added cam apparatus to that, it would be BPU++, and so on. The "BPU" appellation is acclimated until you accept an upgraded turbo(s). Then it is referred to as APU, avant-garde achievement upgrades. This appellation appealing abundant covers every modification that can be performed.

    What are the first engine modifications I should perform?

    I acclaim starting with adopting the addition of the banal turbos to almost 18psi. This will crave a superior addition barometer and a addition cut apache (GReddy BCC). You will accomplish 15 or so PSI with the banal Down Aqueduct in place. This will accommodate an accession of about 30rwhp. Afterwards those modifications are completed, it would be a analytic next move to install the Down Aqueduct and Cat-Back Bankrupt at the aforementioned time. You will now be at abounding BPU.

    What do all the assorted "Free Mods" do?

    There are some altered "free mods" for the Above-mentioned TT. I will awning just a few of them here. The ones I will awning abatement into three categories, addition control, EGR disabling, and TTC or True Accompanying Conversion.

    Three of the addition ascendancy mods are: Bleeder-T Mod, Catch Mod, and the VSV Bypass Mod. Anniversary of these modifications accession addition levels after the use of a addition controller. But you accept to accumulate a abutting eye on your addition gauge, and create abiding they are not acceptance the turbos to addition too top (18psi is a safe level).

    The next mods, are the true accompanying about-face mods (or TTC). This modification disables the Consecutive accompanying turbo operation, and causes the turbos to run consistently in alongside (both on at the aforementioned time). This is declared to acquiesce for hardly bigger mid-range ability (before the accessory turbo would commonly appear online) and allows for a smoother ability band, after the brusque addition access acquired by the alteration from primary to accessory operation. However, this does acutely abatement low-end power, and increases bankrupt babble levels, and accordingly may not be adorable on the street. Two types of the TTC mod are, the acceptable TTC mod which includes 2 methods, base the actuators, or installing a one way valve, and the Cyberbanking TTC mod (ETTC).

    The endure mod I will altercate is the EGR mod. This disables the Bankrupt Gas Recirculation system, which is meant for emissions, and therefore, this modification is for off-road use only. This mod is declared to anticipate the cool heating of the amount 5 and 6 cylinders, which may couldcause burnt valves.

    How abundant ability will my car create at BPU?

    It varies from car-to-car, and the altitude as able-bodied as tuning. Alotof BPU-only Above-mentioned Accompanying Turbos, dyno amid 370 and 410 application at the rear wheels. This is usually accomplished with abstinent temperatures, a displace ECU (to abolish annihilation bad the ECU may accept learned), and generally a little bit of high-octane un-leaded chase fuel. On the street, ability will be reduced, abnormally in poor weather, but at atomic 90 percent of the ability should be retained.

    What affectionate of 1/4 mile ETs and allurement speeds should I run at BPU-only?

    It varies Broadly depending on disciplinarian skill. As able-bodied as clue conditions, acclivity aloft sea level, ambient temperatures, humidity, and pre-race preparation. But alotof abatement amid 12.3 to 12.9 ets with 112 to 119mph allurement speeds on artery tires. Times can bead able-bodied into the 11s with annoyance radials, a acceptable driver, and acceptable conditions, as able-bodied as able pre-race preparation.

    What is a BPU d Above-mentioned TT s top speed?

    Speeds in the mid-high 180mph ambit should be achievable. Already the speed-limiter is disabled, by affairs the "TRAC" agglutinate of course.

    Will the activity of my Engine and Drivetrain be abnormally afflicted with the BPU mods?

    Yes, but not by a cogent amount. If the car is maintained properly, and the car is advised with some account for the components, you should advance abundant of the ability trains life. Which because the actuality that the Above-mentioned is by far one of the alotof reliable and abiding sports cars, it will endure best than alotof able-bodied maintained Banal sports cars. The alone Drivetrain apparatus that will see a decidedly beneath activity will be the banal clutch. It will added than acceptable not endure abundant best than 8-10k afar already at BPU. This abnormally holds true if the car is authoritative again top acceleration runs using 5th and 6th accessory at advanced accessible throttle. If your banal clamp has top breadth on it, or is already starting to slip, you will charge to plan on a new high-performance clutch. Aswell the banal turbos will be accountable to a somewhat beneath activity amount (how abbreviate will depend on how you drive and advance the car, as able-bodied as how abundant addition you will run)

    What s the believability of a 600hp Above-mentioned Turbo?

    Chassis, electrical, and abeyance apparatus should see little aftereffect on believability on artery apprenticed Supras. The banal 2JZ-GTE engine should authority up appealing able-bodied to this ability level. Just how continued depends on maintenance, and how harder you drive it, and how often. But about Supras can go for years at this ability level. The manual believability will depend on whether it s an Automated or Manual. A banal automated will not authority this abundant power, a congenital manual will be required, and it s believability will depend on it s architecture and construction. The 6spd Chiral should authority up just fine, as able-bodied as the rear cogwheel and axles.

    The alone absolute believability apropos at these low ability levels would beleaguer the absolute modifications you perform. Excluding accession short-comings, the apparatus utilized, even actual top superior ones, may abatement abbreviate of branch basic reliability, as the congenital in compromises that is in everything, would angular added appear the ancillary of ultimate performance, than of ultimate believability (Keep in apperception we are talking about a Toyota here, whose reliabilty standards are awfully high) This may cover ammunition arrangement components, turbo components, and especialy cyberbanking wizardry. Basically a start-up that is either Actual able-bodied concieved, or utilizes OE apparatus as abundant as possible, after over burdening them, would posses *near* banal reliability. And affability of the components, and basic selection, and matching, would play a HUGE role in this.

    What are the ability banned of the assorted branch apparatus (Differential, Transmission, Motor, etc.)?

    There accept absolutely not been abundant failures to absolutely pin point a absolute for the assorted power-train components. The motor could abort at branch ability levels if it was active alarmingly lean. But if able-bodied tuned, the motors internals (Pistons, Rods, Crank, Arch Gasket etc) are reliable to 700rwhp. But of advance at these ability levels, if the engine is not start-up and acquainted properly, it is actually a bomb cat-and-mouse to go off, about this would be just as true with a congenital motor. Some owners accept pushed their banal internals to the absolute and accept able-bodied exceeded 800rwhp, and even approached 900rwhp. I still dont accept how such an over congenital motor create it accomplished the bean counters at Toyota Corporate.

    The 6-speed Getrag is ridiculously able for an OE transmission. Its banned will be afflicted abundantly by active technique, such as launching, and whether or not ability alive is used. Even apprenticed hard, the Getrag should authority up analytic able-bodied with 700RWHP. If you amusement it with some respect, it should be able to handle about 800RWHP or more, although abundant affliction and account will charge to be accomplished at those levels.

    Differential, axle, CV Joint, and drive shaft failures are a Actual attenuate occurrence. So I don t accept abundant advice on their abortion limits. On artery tires, it would be about absurd to breach any of these apparatus at ANY ability level. The tires would circuit afore they would put the driveline beneath that affectionate of strain. The tires act array of like a ambit breaker. If you run annoyance slicks, this does not authority true of course, yet they accept accurate themselves to be 10 and even 9 additional capable.

    Will drivability, autogenous babble levels, and low-end ability be abnormally afflicted with the BPU mods?

    Drivability is not abnormally affected. Autogenous babble akin depends on the bankrupt arrangement you choose. Some will create it far louder; some will infact create it quieter. But alotof are just a little bit louder than stock. But the added dBs are aswell accumulated with a Abundant sweeter bankrupt note, so it s absolutely account it. And the autogenous of the Above-mentioned is appealing quiet anyway, so on the highway, it will be Actual livable. As far as low-end ability goes, the down-pipe will abundantly abatement Turbo Lag. So low-end ability and acknowledgment is abundant bigger over stock.

    Will emissions be abnormally afflicted by the BPU mods?

    As continued as a high-flow cat is used, emissions should not be effected, and you should still canyon beheld inspection. If you run after catalytic converters, you are accomplishing so at your own risk, and you would not canyon beheld or emissions testing.

    Will ammunition breadth be abnormally afflicted by the BPU mods?

    If apprenticed calmly, as in ablaze throttle, breadth should not be decidedly affected. Breadth will abundantly abatement during however, if you drive vigorously, added ability equals added austere ammunition I am afraid.

    Should I install an "Intake" (Open Aspect Filter)?

    This is a bit of a yes and no answer. The banal clarify accumulation is a breeze restriction, and an accessible aspect assimilation would access abeyant flow. However, it will aswell draw in added acrimonious engine alcove air, which can aching performance. My advice is to either adapt the banal clarify box, or install a air-conditioned air consecration box, like the Max Air. An added benefit of the accessible aspect filters, is that they acquiesce you to calmly apprehend the primary turbo and by-pass valve.

    What about the banal intercooler?

    The banal intercooler does a appropriate job up till about 17psi on the banal turbos, afterwards that you would apparently apprehension a cogent gain, abnormally in warmer temperatures, with a nice foreground arise intercooler. However, accumulate in apperception it will block some of the airflow to the radiator, as able-bodied as abbreviating acknowledgment slightly.

    Should I alter the branch elastic Intercooler hoses with aftermarket metal hoses?

    It wouldn t hurt. But it wont advice a lot either. At the alotof you may hardly access burke response, but at atomic it will attending nicer.

    What about the ammunition system, are the banal injectors and ammunition pump ample abundant for BPU?

    Yes, the banal ammunition arrangement is actual safe and reliable to 450RWHP, although I would acclaim a ammunition cadence damper bypass. Annihilation over that, and I would awful acclaim accepting the car dynod, and using a wide-band O2 sensor (not a bargain A/F barometer affiliated to the banal O2) to analysis the ammunition arrangement at your top addition setting. 11.5:1 would be a safe ammunition ratio.

    What are the banal injectors rated at?

    540cc/min

    Would the Above-mentioned account from a ammunition controller?

    BPU d Supras run a little on the affluent ancillary as far as ammunition ratios go. This hurts power. What it does do is accommodate a assurance allowance that makes engine accident through blast unlikely. If you get a ammunition controller, and tune it appropriately (on a dyno, with an authentic EGT gauge, and a top bandage O2 (The Banal O2 sensors are not accurate), then you should be able to accretion a apparent bulk of power. One of the alotof accepted cyberbanking ammunition controllers is the APEXi S-AFC. The Fields SFC is acceptable too.

    What should I use to access my addition level, an Cyberbanking Addition Controller, or a Chiral BC?

    Using an EBC is the safest way to accession boost, it will anticipate spiking and over-boosting. But it absolutely comes down to your budget. If you can allow an EBC, get one. If you can t, go with a MBC. And consistently accumulate an eye on that addition gauge. And whatever you are using to ascendancy boost, bethink to not get agitated away, I don t acclaim traveling consistently over 18psi.

    What is the best Cyberbanking Addition Controller?

    There absolutely is no BEST. Although the APEXi AVC-R is a nice unit, it provides abundant added ascendancy over addition than additional EBCs, but it is aswell added circuitous to install, and tune. The new Assault assemblage is aswell nice. Alotof of the ample manufacturers create appropriate units. Just abstain fuzzy-logic able models if you still accept the consecutive banal turbos, they will become "confused" by the aberrant behavior of the consecutive system.

    When installing my EBC, do I affix it to both of the Turbo s Wastegates?

    The Primary Turbo is the alone one with a wastegate. If in abounding accompanying turbo mode, the addition of both Turbos is adapted by the primary turbo s wastegate. So, alone affix it to the Primary s.

    Some humans say I charge to alter my ECU with a reprogrammed one, instead of just using a addition controller. Do I?

    Reprogrammed ECUs for the Above-mentioned TT are Actual $$$. They are in the $1200 range. And they accept not been accurate to accommodate a cogent access in achievement or assurance on BPU akin cars. Their arete shows itself on cars with upgraded Turbo(s). Just be abiding you buy your ECU, or accept it reprogrammed by a acclaimed boutique that knows what they are doing. And accept it tailored to your accurate car (Driving habits, and Mods). And I would aswell acclaim demography a attending at the AEM Programmable system.

    What is a safe addition akin to run at BPU?

    The accepted accord is 17-18psi. Some humans accept taken it higher, but I don t acclaim it if you dont accept the money for a turbo replacement/upgrade.

    Which Down-Pipe is recommended?

    The RMM (or Rod Millen Motorsports) Cat-less Downpipe is the alotof frequently used. About some additional brands exist. Some down-pipes, such as the Accidental Technology DP, affection an emissions acknowledged high-flow catalytic converter.

    Will a high-flow cat aching performance?

    It will accept some aftereffect on ability output, but not a lot. Its exact aftereffect on HP is not clear, but it apparently costs a few hp at the most, maybe 5-15hp at BPU ability levels.

    What is a Down-Pipe?

    It is the area of the bankrupt arrangement that connects the aperture of the Turbocharger s Agent area to the "Cat-Back" bankrupt system. The Downpipe is aswell area the two catalytic converters are located, as able-bodied as the O2 sensor (or sensors in OBD-II cars).

    I accept an OBD2 car. Can I still install a Down-Pipe?

    Yes. But unless the DP has a Agitator and a additional area for an O2 sensor, you will cruise your analysis engine light, unless you get one of those O2 atramentous boxes.

    Which Exhausts are the loudest?

    The Tanabe Antagonism Medallion, and HKS Hiper Titanium assume to be the two loudest systems.

    Which Exhausts are the quietest?

    The Tanabe Aggressive Medallion, the discontinued Tanabe G-Power Brand and the GReddy (SP) Artery Achievement assume to be the quietest. At annihilation beneath than abounding throttle, they are no louder than stock. But at abounding burke they assume to deathwatch up a bit.

    What are some recommended bankrupt systems?

    It depends on your claimed preferences. Beneath I will breach down some of my recommendations based on assertive combinations of preferences.

    Subtle Administration / Actual Low Cost:

    -Random Technology (75mm, abounding stainless steel)

    Subtle Administration / Low Complete Akin / Abstinent Cost:

    -GReddy Artery Achievement (80mm)

    -Tanabe Cool Aggressive Brand (80mm, abounding stainless steel, 50-state legal)

    Subtle Administration / Abstinent Complete Akin / Abstinent Cost:

    -ATR (75mm, abounding stainless steel)

    Tasteful Administration / Low-Moderate Complete Akin / Low Cost:

    -HKS Baiter II (85mm)

    Tasteful Administration / Low-Moderate Complete Akin / Abstinent Cost:

    -GReddy Ability Acute (80-94mm)

    -HKS Cool Baiter (95mm)

    Tasteful Actualization / Abstinent Complete Akin / Top Amount / Cool Light:

    -Veilside Breach Bead Titanium (90mm, abounding titanium)

    Tasteful-Wild Administration / Low Complete Akin / Abstinent Cost:

    -TRD 2nd gen.

    Wild Administration / Abstinent Complete Akin / Low Cost:

    -APEXi N1

    -HKS Hiper (75mm)

    Wild Administration / Abstinent Complete Akin / Abstinent Cost:

    -APEXi GT Blueprint (95mm, abounding stainless steel)

    -Blitz NUR Blueprint (80mm, abounding stainless steel)

    -HKS Hiper Carbon/Titanium (75mm, CF captivated muffler, titanium tip)

    Wild Administration / Top Complete Akin / Abstinent Cost:

    -Tanabe Antagonism Brand (80mm, 50 accompaniment legal)

    Wild Administration / Top Complete Akin / Top Amount / Top Flow:

    -HKS Hiper Titanium (104mm, titanium muffler)

    What is the cheapest avenue to replacing the DP and Cat-Back?

    Have a custom achievement bankrupt boutique assemble a complete 3" bankrupt arrangement (Turbo-to-Tip). It should amount able-bodied beneath that $400. And then you can use the muffler and bankrupt tip of your choice.

    Which Ammunition Cut Apache is recommended?

    The GReddy BCC (Boost Cut Controller) is awful recommended.

    What does the Ammunition Cut Apache do?

    The branch ECU is programmed to actuate a ammunition cut if the assorted burden exceeds 14-15psi. It does this as a assurance admeasurement to anticipate what the ECU sees as over boosting. The Ammunition Cut Apache finer eliminates, or at atomic raises the cut to a college pressure. A reprogrammed ECU can aswell annihilate this function.

    Which addition barometer is recommended?

    Any top superior addition barometer will plan well. Accurateness is the important affection to attending for. Autometer gauges are a acceptable value. The Japanese gauges, APEXi, GReddy, HKS, etc., accept added features, but at a abundant college price.

    Where can the addition barometer be installed in the interior?

    If you wish to arise it in the dash, the two alotof accepted places are the Alarm area (which holds a 52mm gauge), and the Air Aperture beside it (which holds a 60mm gauge). You can aswell use an A-Pillar barometer pod.

    What is the banal addition pressure?

    11-12psi

    Are Cam Apparatus a acceptable modification for the Above-mentioned TT?

    Yes, they accept been apparent to accommodate a 5-15rwhp accretion on a BPU d car. But to abstract their potential, you haveto accept them tuned, by a abreast tuner, on a dyno. And alotof of the ability assets will be apparent on the bankrupt side. I aswell acclaim affairs cam apparatus which affection 5-bolts.

    Are Beneath Drive Pulley(s) a acceptable modification for the Above-mentioned TT?

    Most of the crank-shaft under-drive pulleys crave the abatement of the branch torsional damper.

    This is from MKIV.com :"this is NOT an alien (harmonic) balancer, as the crankshaft is absolutely balanced, rather it dampens both the axial agee couples produced by the battlefront pulses, and the adorable angle moment from the accent drive belt."

    Basically this accessory provides crutial abreast amid the engine apprenticed accessories, and the crankshaft. However, abatement of this can accommodate a 10-15rwhp gain, but at a amount for continued appellation use.

    Do I charge to advancement the agitation if advance to BPU?

    The banal agitation arrangement is Actual able of bartering abundant blaze for a BPU d car. The banal agitation arrangement uses 6 ample coils, one for anniversary cylinder. So the arrangement is able of acknowledging Actual absorbing HP levels. You may charge to change to a colder ambit bung with a tighter gap (see below).

    What about the atom plugs, which are recommended at BPU or college level?

    Basically you wish agnate plugs as stock, but a acknowledgment calefaction ambit and a abate gap. The banal plugs are NGK BKR6EP-11 (2978) and are platinum angled and accept a .044 (1.1mm) gap. The ideal NGK backup for a adapted Above-mentioned would be the BKR7E (6097). It is one ambit acknowledgment (the 7 ), is non-platinum angled (the abridgement of the p ) and has a abate .0315 gap (lack of the -11 ). This bung is aswell alleged the NGK 6097 and they are adequately inexpensive. Platinum angled plugs are not adapted for top ability applications, Iridium plugs are added prefered. Abominably their doesn t assume to be a BKR8E which ability be bigger for high-HP Supras.

    Another acceptable bung to try is the Denso Iridium IK22 or IK24. These plugs may endure best than the aloft mentioned NGKs, but are aswell 6 times as expensive. The banal backup bung would be the IK20, the IK22 is one move cooler, and the IK24 is two accomplish acknowledgment than stock. The IK22 would be acceptable for ~400rwhp to ~600rwhp. The IK24 would apparently be a acceptable best aloft that. Two additional plugs frequently acclimated are the NGK 3330 (BCPR7ES) which alter abundant added from the blueprint of the banal plugs than NGK 6097. Aswell the Accelerated Blaze #5 acclimated to be actual popular, but are added expensive, don t endure as long, and accept fallin out of favor. Both of those plugs accept been accepted to couldcause slight barrier at idle. Plugs on Supras do not reside long, usually about 5,000-10,000 miles. So I acclaim replacing them with every additional oil change.

    What is the HKS VPC and GCC?

    It is an cyberbanking device, which electronically and physically removes the awful akin accumulation airflow sensor from the assimilation tract. VPC stands for Attitude Burden Converter. The HKS GCC is a accessory that allows added fine-tuning of the VPC.

    Do I charge an after-market Draft off Valve?

    It is not actually required, but it is a acceptable idea. The branch by-pass valve is decumbent to failure, and an aftermarket BOV is apparently a astute investment for preventing turbo damaging compressor surge. And it sounds air-conditioned too. However, it haveto be acclaimed that if you still accept the branch mass-air breeze sensor, a after-effects valve, which is vented to the atmosphere, may couldcause barrier amid shifts.

    Can I run Nitrous Oxide on the Above-mentioned TT, even if I am already at BPU ability levels?

    Yes. Alotof humans run 50-75 attempt wet assorted systems. If you wish to run a college attempt than this, you ability wish to accede a well-designed absolute anchorage system. I accept apparent as abundant as a 200-shot acclimated on one of these systems, and an upgraded ammunition arrangement would be a must.

    450hp just isn t enough, what can I do?

    Ah the possibilities Basically you are alone bound by your imagination, and your wallet. You understand what they say, acceleration costs money, how fast do you wish to go?

    The absolute ability lies in Individual and Accompanying turbo upgrades, and the options are limitless. You can either body a balmy motor that puts out 450 RWHP all day continued with burning addition response, or a 1000+ RWHP monster.

    Unfortunately, things alpha accepting added difficult afterwards simple BPU modifications. Modification becomes added than "bolt on Downpipe, accretion 50hp". Things like tuning, locations selection, and analogous combinations of locations become abundant added important. However, this is the case with ANY top HP car. Actually, even at awfully top ability levels, the Above-mentioned TT is still easier to abstract ability from than about any additional achievement car. But it should be kept in mind, that it wouldnt be as simple as the BPU bolt-ons.

    If you just wish something that will acknowledgment that annoying Viper GTS. Then focus on a balmy individual turbo advancement (T04S04, T60-1, SP57-SP61). Forth with this, you should install a foreground arise intercooler, a ammunition controller, ammunition cadence damper bypass and EGT gauge. This is bold you accept done all the BPU mods, additional BOV, EBC, Cam Gears. With tuning, and a few allowance and ends, you should be able to cull 450-500 RWHP (490-580 crank HP) numbers while on a banal ammunition arrangement (assuming it is in abundant condition). This would be a absolute investment of about $6,700-$11,500 in engine/electronic apparatus (also includes the able gauges). If you already accept the BPU mods or FMIC, etc., you will absorb beneath than this. The aberration in prices reflects the amount of college end locations and accession of a HKS VPC to alter the akin banal MAF.

    The next akin would crave a absolutely upgraded ammunition system, and achievement cams would be recommended, as able-bodied as added electronics (programmable engine administration such as the AEM, or VPC/GCC/ECU combo, etc.). This would acquiesce you to run abundant beyond turbos and injectors. You can create it accomplished the 700RWHP ambit after defective to alter the internals of the motor with stronger components, even at these ability levels, if appropriately acquainted and maintained you should absorb a fair bulk of believability while still on the banal internals, as some humans accept eclipsed the 800RWHP akin while still active banal basal ends in their Supras. If you accept to go advanced and body up the basal end, then the skies are the absolute as far as ability goes. Just create abiding to accept allotment selection, installation, and affability done by competent and accomplished persons. Although this should authority true at ANY akin of modification.

    Should I install a Turbo Timer?

    Absolutely. Unless you don t apperception sitting in your car while it idles down every individual time you charge to about-face the car off. A Turbo timer keeps the engine active for a preset time already you about-face off the ignition. So you can abolish your keys, and lock up the car and not accept to anguish about it, it will shut off on it s own. This is important for the activity of the turbos. If the turbos are not accustomed time to air-conditioned down, it can overheat the oil and couldcause coking which will block oil breeze to the turbos and accident bearings and baker seals.

    How abundant is the Above-mentioned s ability achievement afflicted by changes in ambient temperatures?

    Very noticeably, just as with alotof turbo cars, the Above-mentioned Accompanying Turbo can be actual temperature sensitive. Abnormally with the banal turbos and intercooler. On a BPU car, I would not be afraid to see a 10 percent abridgement amid 50-60deg temperatures, and 90deg additional temperatures

    Will the banal clamp authority the ability levels of a BPU car?

    It depends on the action and abrasion on the banal clutch. If it is in acceptable condition, yes, it will authority the power, appealing able-bodied in fact, although you may acquaintance clamp blooper while at abounding addition in top apparatus such as 5th and 6th. If you drive vigorously, acceptation you run at top addition frequently, then the activity of the stocker will be Abundantly shortened. Be afraid if you see an added 10,000 afar afterwards BPU.

    Can I resurface my flywheel if replacing the clutch?

    It is not recommended. Buy a new Toyota Flywheel.

    Can I install a failing flywheel?

    Yes, but be acquainted that they can make a lot of babble at idle, and can address added accordance and shock to the big-ticket Getrag transmission.

    Why is affairs the TRAC agglutinate benign over just axis it off with the about-face on the centermost console?

    Just blame the "Trac Off" button alone partially disables the Trac system. It disables the Trac burke physique and TRAC funtion through the ABS Arrangement (on 93.5-96 only), but not the Trac arrangement s agitation timing arrest function. Unplugging the Trac agglutinate eliminates both functions, as able-bodied as the 155mph acceleration limiter, which works through the trac system. The agglutinate can be begin in the capital agglutinate box on the drivers ancillary of the engine compartment. It haveto be acclaimed that removing the agglutinate will couldcause the TRAC ablaze to break on, but you ll get acclimated to it.

    Will the TRAC arrangement advance the cars performance?

    NO. The Trac arrangement was calibrated to advance absorption in glace conditions. It was not calibrated with achievement in mind. If the Trac arrangement senses a accident of traction, it comes on hard, acid ability drastically; this will do annihilation but aching performance. I aswell would not await on the Trac arrangement for accouterment adherence at top speeds, if you were to apart control, it would be too apathetic and clumsy, and would added than acceptable bassinet your efforts to achieve control.

    How can I abolish the branch 155mph acceleration limiter?

    Remove the agglutinate for the Trac system. The acceleration limiter works through the Trac burke body.

    What is the Above-mentioned TT s top acceleration with the Trac agglutinate removed?

    There is some agitation on this subject. There are rumors that 180 can be achieved. But by traveling with the numbers, 168-172mph in banal anatomy seems possible.

    What is the Above-mentioned TT s best abstract top speed? Can it beat 200mph with abundant power?

    Lets acquisition out.

    The Above-mentioned TT with the 6-speed has a banal engine redline of 6800rpm, and a 6th accessory arrangement of .79:1, with a rear arbor arrangement of 3.13:1. Now we accumulate our 6th accessory arrangement times our rear arbor ratio, and we acquisition out our final accessory arrangement is 2.472:1. Now we bisect 6800rpm by our absolute accessory abridgement of 2.472:1 and we acquisition out our rear axles, and accordingly auto are spinning at 2751rpm at 6800 engine rpms.

    Now we charge to account our annoy circumference. The rear tires area amplitude it 255mm, and the sidewall s aspect arrangement is .40, so our sidewalls are 102mm. Now, to catechumen this to inches, we bisect this by 25.4, which equals 4.015 inches. Now accumulate this by two, back we accept two sidewalls authoritative up the absolute diameter, and add the caster bore of 17", and we see a absolute bore of 25.031 inches. Now to acquisition out our circumference, we accumulate that amount times pi (3.14), and we acquisition out the ambit is 78.59 inches, now bisect that by 12 to catechumen to feet. And we get 6.549 anxiety absolute circumference.

    Now accumulate our annoy s revolving speed, by the annoy s alfresco circumference, and we acquisition that the annoy is accoutrement 18,016 anxiety per minute, bisect that by the 5280 anxiety in a mile, and we acquisition we are accoutrement 3.412 afar per minute, now accumulate that by the 60 account in an hour, and we acquisition we are traveling 204.7miles per hour @ 6800rpm in 6th gear. If the engines redline is added to 7500rpm, which it generally is, because of a college abounding turbo. Then our best acceleration would be 225.8mph, accustomed abundant ability of course.

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