Forced Induction Superchargers | Turbochargers | Intercoolers

Add an intercooler = how much more psi?

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Old Apr 1, 2005 | 01:09 PM
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Default Add an intercooler = how much more psi?

I have a 99 camaro SS which is pretty much stock except it is a 382 stroker with a forged crank and pistons which have 9:1 compression. I also have an aftermarket fuel pump and 60lb injectors. The car is using an STS kit and runs good at 11psi with the methanol turned on. I upped the boost to 14psi and the car ran much worse than it did at 11psi. As stated, I have the methanol injection but I do not have an intercooler. I am assuming that 14psi is too much boost and creating too much heat which is causing knock and the ECU is retarding the timing. Does this sound right? I do have a FMIC (large 3" OBX) now and will be installing it on Saturday. Since I now have an intercooler, should I not worry about using the methanol anymore and can I run 14psi or is that still too much?
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Old Apr 1, 2005 | 01:28 PM
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Default Meth

If the meth is already there leave it. It will only have more benefits than draw backs.


Originally Posted by jsniper
I have a 99 camaro SS which is pretty much stock except it is a 382 stroker with a forged crank and pistons which have 9:1 compression. I also have an aftermarket fuel pump and 60lb injectors. The car is using an STS kit and runs good at 11psi with the methanol turned on. I upped the boost to 14psi and the car ran much worse than it did at 11psi. As stated, I have the methanol injection but I do not have an intercooler. I am assuming that 14psi is too much boost and creating too much heat which is causing knock and the ECU is retarding the timing. Does this sound right? I do have a FMIC (large 3" OBX) now and will be installing it on Saturday. Since I now have an intercooler, should I not worry about using the methanol anymore and can I run 14psi or is that still too much?
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Old Apr 1, 2005 | 03:10 PM
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Default

Are you running stock heads/cam in that 382?
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Old Apr 1, 2005 | 05:52 PM
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Default

Sometimes it's better to keep the psi the same but run more timing.
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Old Apr 1, 2005 | 07:31 PM
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Default

which turbo are you running? It might not be up to the task of giving a 382 14 psi
I would think water/meth injection would be better than most air/air intercoolers
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