So I'm tuned and I used to be able to get about 22 psi in 2nd gear. Now, I'm lucky if i get 17... It usually stays at 15..
Do you guys know what the problem might be?
and how would i check to see if i have a leak?

 

....

 

Che k ure end tanks charge pipes ect. Get a boost leak detector...

 

throwing a CEL?

 

i have my check engine light, but thats from the cat...

 

verify that you only have one code, when i first bought my car it had 20+ codes so yeah

 

im about to take it to autozone or something then...