Greddy Type-S problem

[domenico_169]

k since i have installed my greddy type s, my car has been back firing once and a while. i cant understand why. is it maybe because i did not hook up that extra nipple where you can hook it up to a vacuum line if you want? but i dont really see that being the problem. and where can i hook up that vacuum line to? anything? also since i put his bov in, once i let go of the gas and put it in neutral or whatever and just coast and let my rpms drop it seems to go too low and my boost gauge moves up a little as if trying to make boost, any help would be great. thanks.

 

[98eclipseRS]

If you are venting then that is your problem right there, from the clues you were giving us it sounds like you are venting because backfiring is usually when you are running to rich and unburnt fuel in the exhaust stream ignites. So put it this way if you are venting STOP DOING IT. If you aren't then well i don't know what to tell you.

 

[domenico_169]

no im not venting, but when i tried venting, the problems i described are multiplied by like 20.

 

[98eclipseRS]

um...well i don't have any experience with this bov so i am going to try and help you best i can. I say try plugging that extra nipple if its made for a vacume line then it should have something to do with the air in the intake tract so it might be letting unmetered air into the engine causing you to have the bad idle and less vacume during idle. When i had a vacume leak my car only pulled 10 hg at idle and i had a really low idle now its all good. Do you get any sort of early fuel cut??

 

[domenico_169]

once i hit like 6000-6500 on 2nd sometimes i do. where can i hook up that extra nipple to? any vacuum line?

 

[98eclipseRS]

ya sounds like you have a vacume leak somewhere that's excatly what my car used to do it would cut out unless i let of the gas some(still don't know why that made a difference) as for the nipple what did you attach the vacume line form the 1g bov to? If you have that vacume line hooked up to something and there is still another nipple i would say cap it with some sort of rubber "condom" type thing, i kow if you go to an autoparts store they have vacume port plug things. They are colored little peices of rubber that you put over unused vacume hookups. try that and see if that helps at all.