jracer240 Posted May 19, 2016 Share Posted May 19, 2016 I just recently installed a Perrin turbo inlet hose and Grimmspeed intake on my 05 LGT. Since then I noticed that I rarely get up to the stock preset 10psi boost level, and the boost usually peaks around 8psi judging by my gauge. Any advice on what is causing me to lose 2psi of boost since these parts were installed? -Thanks Link to comment Share on other sites More sharing options...
Sarang Posted May 19, 2016 Share Posted May 19, 2016 Do you have a tune? You shouldn't run an intake without a tune. Link to comment Share on other sites More sharing options...
whitrzac Posted May 19, 2016 Share Posted May 19, 2016 IIRC it should be around 13psi for a stock tune even. NEVER run the car with a larger intake without a proper tune. Link to comment Share on other sites More sharing options...
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