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safe boost levels on stock sr20

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Old Mar 27, 2006 | 06:50 PM
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Default 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.

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Old Mar 27, 2006 | 06:57 PM
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i think 14-15 psi one bar.. feels really nice and is plenty of power
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Old Mar 28, 2006 | 04:15 AM
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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.
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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
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Old Mar 28, 2006 | 04:21 AM
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Run 1 bar for your high and 7 for your low you will be fine.
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Old Mar 28, 2006 | 06:56 AM
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i would run only about 10-11psi to keep it safe if your still running on the 370's...detonation will own you
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Old Mar 28, 2006 | 07:13 AM
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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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Old Mar 28, 2006 | 12:08 PM
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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.
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Old Mar 28, 2006 | 01:02 PM
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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 and S14 turbos are both T28's. The S15 has a block off plate on the exhaust side between the wastegate and exhaust outlet. As far as i know thats the only diffrence.

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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