RBRotary

Ok so my problem is my car is bogging and its REALLY ANNOYING... i can't even run around just giving it gas. it'll bog out and i'll have to shift..

things i've done to try and fix the problem
1.spark plugs
2.spark plug wires
3.fuel pump

and that's about it.
would anyone know what i should do next?
i'm really stuck on what i need to do and i miss smashing on the freeway and around the streets

eage8

iTrader: (9)

sounds like you're hitting fuel cut. Do you have a boost gauge?

RBRotary

well i have the stock one. my car is running straight pipe right now and it has a resonator. could that be the cause of anything?

eage8

iTrader: (9)

yeah, it's hitting fuel cut. when stock boost pressures go above like 8 psi (I think?) the ECU will cut fuel so you don't overboost.

To fix it you need to get a fuel cut defender.

http://racingbeat.com/resultset.asp?PartNumber=11570
http://racingbeat.com/resultset.asp?PartNumber=11571
(depending on what year)

but you also need to:

A) get an aftermarket boost gauge to keep tabs on what boost you're actually running (the stock boost gauge is not accurate and won't help at all)
B) if it is too bad (above 10ish psi) you need to take off your turbo and port your wastegate (or take it to a performance shop that knows how to do this).

These are both very important... if you don't do them after getting the fuel cut defender you could easily blow your engine and/or your turbo

RBRotary

thanks eage8!!! much appreciate all the help and concern! but the thing is i haven't put my boost up? why would it be at a higher boost? and how much does porting a wastegate cost? cause i haven't messed with my boost at all. thanks again

JerryLH3

iTrader: (11)

Modifying the exhaust to be more free flowing is what increased the boost.

RBRotary

oh nice thanks did not know that haha so how much would you say its running at right now? if its straight piped and has a resonator?

eage8

iTrader: (9)

it's impossible to tell, that's why you need a real boost gauge.

I'm not sure how much porting the wastegate would cost, it'll depend on how much you do yourself (if you take off the turbo youself) and it'll depend on the shop you take it to.

RBRotary

nice well i'm in the process of looking for a fuel cut defender now lol hopefully i'll find one soon and that'll solve the problem!

g14novak

iTrader: (1)

Their all over the classifieds. You could probably pick one up from a local member in your area for pretty cheap. I'd also recommend picking up a boost gauge as the stock one sucks worse than... well.. well just say it sucks.

RBRotary

he's right lol anyway how much boost does an fc push stock? s4. thanks again for all the help everyone!

eage8

iTrader: (9)

5.5 psi

g14novak

iTrader: (1)

Stock turbo is good to 10 psi, 12 if you port the wastegate.