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#11 | |||||
Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Also note that an aftermarket ecu requires a map – likely configured by someone other than a certified automotive engineer - and that map (or maps) most likely will not have even 1% of the time that Toyota put into developing the stock map. Please trust me that this is a major consideration for not only peak-horsepower tuning, but regular drivability. In fact, peak horsepower tuning is almost a trivial job compared to getting cold-starting, tip-in, and all-around drivability just right in various temperatures, humidity levels, and altitudes. In short, when you make the move away from the oem ecu, it is a *major* step. We can get you 600rwhp with absolutely no issue at all, with the oem ecu. Please consider this before we make the final call on dumping it. True, but I’m still not convinced that you will need to. Quote:
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Aside: The largest ‘record’ I’m aware of is nearly 700rwhp on 93 octane pump gas, with an absolute monster turbo...but it didn’t make barely any boost at all until about 6800 rpm, and then it went vertical. In the end, nitrous was used to spool this turbo, and it was rarely run on pump gas. When boost ‘goes vertical’, precisely controlling it is very difficult (especially if spooled by nitrous!)…and engine damage occurs if boost limits are exceeded for a given octane of fuel (yes, even with ‘built’ internals).I appreciate your tight timeframe, your relatively unrestricted budget, and your high expectations. I sincerely believe we can meet all of them. If you’ll allow me, I can keep you from wasting your time (and money). Safety and an overall balanced design will be part of it too. Also believe me when I say, there really is no practical limit to the amount of horsepower you can run on the new C16 race fuel (or the VP Import 120+ octane before it), in a properly modified Mkiv Supra Turbo. This can be a reliable (albeit not necessarily comfortable-to-drive) ride at pretty much any number you care to put down. Try me. Specifics needed: - Your max rwhp number. (Again, we can turn down the boost limit at first, without changing anything else). - Your application (drag racing or roadracing or drifting or autocross or top speed etc.). - Will this car be 'shown', or will it be a 'sleeper'. - Is E85 available nearby? Would you consider running it full-time? http://www.e85locator.net/State%20Pa....html#LasVegas - How much do you care about it being comfortable to daily drive. Eg. What if the auto tranny has very harsh shifts? What if it doesn't cold-start very well? What if it hesitates a bit on tip-in. What if the torque converter is high-stall and the engine revs and then you get a small bit of wheel spin when leaving most/all traffic lights (especially up-hill)? What if it runs well in the summer but doesn't run well in the winter, or vice-versa? These are all just examples - in general, I need to know how much we can turn this into more of a race car and less of a lexus-like Grand Touring sportscar...and still have you extremely pleased with the results.
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Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 11-19-2012 at 01:30 PM. |
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