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Discussion Starter · #1 ·
Hello Everyone,

I recently upgraded to stage 2 and it seems slower than stage 1.

Grimmspeed J pipe
3 port boost controller
SF intake

I was getting 19-20psi according to the screen in the car but now with stage 2 I am getting 14.6psi.

I have tried Stage2+BigSF 93 v302 and Stage2 93 v302

Any help would be appreciated.
 

· Registered
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120 Posts
Discussion Starter · #3 ·
@4EverMetal - I changed out the stock boost controller to the GrimmSpeed 3 port boost solenoid which provided new hoses.

I did revert back to Stage1 93 SF HWG and got 19.8psi and also tried stage1 93 and got 17.7

the Stage2 and Stage1 HWG there is a weird (stalled sucking sound from intake) after 3800rpm
 
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