question about stock apex motor with head shim.

quadsean1

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I have a stock apex motor with head shim I'm running a gt2871 .86 ar with powderlights header mid mount high volume fuel pump a powderlights intercooler pc5 setup for boost with the auto tune and ignition control box. Now question is how much boost can I run and be safe on pump gas? And how much boost can I run with race fuel with stock injector's and what octane race fuel? Any suggestions would be great thanks in advance.
 
Please read thru the forum or make a search using Google With site:ty4stroke.com -
Those questions have been covered extensively over the years.
Another info you need to add, what model year Apex do you have?
 


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