safe boost levels on stock sr20
I have an s15 turbo on a stock engine, FMIC, tubular manifold, pretty stock, I am at 7psi, scared now to boostup because of a previous turbo blew, which wasn't my fault anyways. Give me some safe levels.....12psi, 15psi???? Thanks
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Ever want to go on the highway at about 100, and throw the car in reverse just to see what would happen.
813-356-8011
Ever want to go on the highway at about 100, and throw the car in reverse just to see what would happen.

813-356-8011
Originally Posted by lunchbox
i think 14-15 psi one bar.. feels really nice and is plenty of power
Thinking just won't cut it this time. I need for sure figures.
__________________
Ever want to go on the highway at about 100, and throw the car in reverse just to see what would happen.
813-356-8011
Ever want to go on the highway at about 100, and throw the car in reverse just to see what would happen.

813-356-8011
i thought that the fuel is usually the main restriction when asking how much boost you could run, well untill your talking serious pressure and horsepower that is, from what ive heard, 12psi is about tapped out...
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If you have a wally pump in there with an FMIC - you can run 11 psi - If you have injectors that can handle 270-300whp then you may continue up to 14.7 (1bar) psi. The stock turbo runs out of breath after that - it's just blowing hotter and hotter air. Once you get tired of 1bar on the t25 - it's time to upgrade.
half of these people are idiots. i'm sorry, but if you have an s15 turbo, don't go past 10psi. if you have a walboro, your base fuel pressure is bumped up to 50psi, but i wouldn't risk it. get larger injectors and then you can run up to 18psi.
Originally Posted by Cronic
I based what I said on the T25 turbo - not sure if the S15 is different. I misread and thought of the S14 T25. Is the S15 a T28?
S15 480's, and a walbro pump you can run 1 bar as your high. I wouldent reccomend anything above that. I know about 4 people using the same setup and have had no problems.
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Last edited by B18C5-EG; Mar 28, 2006 at 01:08 PM.


