Boosting an MK4 - Toyota Supra Forums

06-08-2010, 03:21 PM

pwpanas

Supra Owner

Join Date: Oct 2005

Location: GA, USA

Posts: 2,209

Quote:

Originally Posted by mrgdm007

Hey so I had a quick question, with bpu parts on a 94 supra with stock tt's, 6speed, and stock intercooler, my question is, is 14,15 psi safe with the stock intercooler on 93 octane and what kind of hp will I be looking at with bpu mods at these boost levels thanks in advance!

How many miles are on your turbos? Have you done a compression test? If I can get your mileage and compression numbers, it'll be easier to give you a good answer to your question.

16psi is safe* with fresh 93 (r+m)/2 octane fuel with the oem ecu, but no more. 17psi+ will slowly but surely damage the engine and reduce compression.

*Disclaimer: Ymmv

__________________
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; 06-09-2010 at 04:11 AM.

Tags

boost, bpu, horsepower, mods, psi

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