Car Stutters

[qwertyGST]

Right now, All i have done is put a K&N Airfilter, Boost Gauge And Air Fuel Ratio Gauge to my car - right now in each gear im in about 10-11 psi of boost my car studders until it can hold it, at FIRST i thought it was my b.o.v. so I bought a Greddy Type-S BOV and replaced the plastic one on my car, but it still does that between gears, is it my fuel cutting out?

 

[90DSMTurboFWD]

boost leak maybe. Do a leak test

 

[qwertyGST]

Not sure where the boost leak would be coming from? New line from intake manifold to B.O.V. Lets put it this way, Its fine between 0-10psi, 11-13 psi studders, then about 14psi MAX it runs fine, usually in 5th gear if I accelerate from 60 mph to 75 mph it studders, and then about 80mph it runs fine, doesnt studder at all. Any suggestions?

 

[dashtz69]

That's not too bad then. It could just be a little boost leak. Did you clamp the filter down all the way? Or it could be your spark plugs or wires. My car did that with a bad wire, but it did it as soon as it started to boost. So I don't know.

 

[Laguna739]

my car did that exact same thing, i recommend changing your wires, and that fixed my prob. best of luck to ya!

 

[timmy]

Are you venting?

 

[qwertyGST]

Brand new bosche platinum plus' the wires and spark plugs, cost me 50 something bucks for it all and it still does that, the air filter is clamped down as tight as im going to get it. And what do you mean by venting??

 

[pickens]

This is a common problem that affects many 2g dsms. When spark wires, and boost leak checks don't fix the problem, you are screwed. I have no definative answers for it though.

 

[dashtz69]

Venting is when you take the return hose off of the BOV that goes to the intake. It can cause bad idle too. I don't know if it would make your car studder though.

 

[qwertyGST]

whats the best way to check to make sure there is no boost leakage anywhere?

 

[dashtz69]

Build a tester...

http://www.vfaq.com/index-main.html

You should hear a whistling wherever there is a leak.

 

[midnght]

Sounds like you have had nothing but problems with the car man. Did you get a tune up when you bought it. Also get the compression test. This won't solve this problem but you need to get a full idea of what kind of car you are dealing with. Hope everything works out for you!!!