Well guys, I think I might have found my problem, but I want some people to verify it first. For about two weeks I have been trying to find out why I can't boost over 12psi and why my car sputter's and has a really hard time picking up speed once it hits around 12psi. Today, while driving I held the gas pedal about half wot and kept it in the same spot without letting off and sure enough once I hit 12psi it starts to sputter and hesitate really bad and wont build more boost. And I listened and realized that air is fluttering like crazy out of my hks ssq bov! (Remember, I didnt let off the gas at all!)

Could this be why I cant boost more than 12psi and why my car is sputtering/hesitating like crazy??

 

hks is junk on our cars, that is not your prob. your w/g is stuck, or the vac. lines are broken, or your b/c isnt working.. why do keep stepping on the gas when you know there is a problem..

that fluttering is the exact reason why these bov's are not good on evo's.

 

Brand new fp wategate, brand new hallman mbc, new vac lines. . . . I dont think its any of those

 

how long ago were those parts put on?

 

within the past two weeks ive put on the following:
10.5 hotside
o2 housing
new manifold
new hallman mbc
FP wastegate
new vac lines
and just put in ngk bpr7es gapped at .25

 

did your car work right at all after the installs?

 

No, This began before any of this was installed. . (I thought I had a bad wg and that was the reason for my boost problem, but I guess I was wrong)

I've been reading and searching. . Anyone think maybe my plug wires are bad or maybe one of my coil packs is shot? Would that cause it to sputter-hesitate like crazy after 10psi and not really be able to build more boost?
By the way the only check engine light im throwing is for my egr valve.

 

still sounds like vacuum issues. swap plugs and see, but i doubt it. you may have a major leak... did you leak test ?

 

No, not yet ^

Maybe I should just take it to the stealership??

 

Any ses light?

 

forget the stealers..check for vacuum leaks yourself..way cheaper and easy to do.

 

if i were you, i'll just get it to a shop who knows what he's doin !

 

do you have a different bov you can try?

 

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