On wednesday Installed my HKS RS intake, My Greddy type S BOV and my Dejon Tool Upper IC pipe and everything was running great but now I have a whistling sound from the BOV at very low rev, when im driving on the highway im constanly boosting or the BOV is just letting off air. Now this morning my Check engine light came on and the ride when I let off the gas is really "choppy." If you guys know anything any help would be appreciated. Thanks.

 

Hi,

My first question would be do you have the snorkel still installed in your car? If so, did you properly mount the snorkel? Next, did you forget to connect the MAF sensor? Have you double checked all of your clamps to make sure there aren't any leaks?

 

I am a jackass

 

Yes the MAF sensor is plugged in, no theres no leaks and by snorkal if you mean BOV then yes...

 

Check for any vacuum leaks, that has caused a choppy idle in my old STi.

 

I'd double check for boost leaks -- the BOV should not do what you are describing.

 

i guess you did the single spring mod.. so did I. i had the same problem. now that im running high 21 psi boost the bov is whistling also tonight i cranked in the spring tentioner in some and it went away and im actuall holding boost better. just dont go to far as you will create surge. TUNE THAT bov man IM TRYING TO....lol

 

yes I would check leaks and security on that snorkel

 

yeah I did single spring mod and now I have both springs in there again...no more leak only problem is its making this WICKED annoying fluttering sound. like a sneeze. no more whistle heh