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what is the most psi i can push through a stock US spec 3sgte? i just got a 91 hardtop turbo after my 91 N/A got totaled a month ago.
 

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1) OEM boost range is 7.1 to 11.8 psi.

2) Fuel cut (overboost reponse) kicks in ~ 12 psi.

3) With a boost controller, and FC modified or eliminated, you can easily boost 15 psi with the CT26.

4) With the CT-26, at ~ 15 psi the restriction on the turbine side increases faster thatn boost pressure, so litlle if any additional power can be made.

bill
 

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HKSMR2TURBO said:
what is the most psi i can push through a stock US spec 3sgte?
I have been racing at 24.5 psi on a stock 3SGTE ... of course, I am set up to do so :)
An upgraded turbo, significant intercooling, water injection, race gas, proper fueling and tuning go a very long way when done correctly.

Bill's post above is right on for the CT26 turbo (the stock turbo).
 

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i push 18psi on pump gas, and 23+psi on 94 octane or higher... i would definately not recommend it tho, i have a freak motor
 
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