new gst, boost issues/black smoke/car stalling

[pruitt2480]

Hey there everyone! Glad to finally have a dsm to hold onto long enough to justify joining the forum (had a 96 tsi awd that was a nightmare)

I bought my gst from a guy in Minnesota, had a decent list of aftermarkets for me to work off of. When I bought it the car needed a new clutch Master, and It was giving maybe 6 lbs of boost. I replace it and Now It shifts great and for some reason I'm getting around 16lbs on an evo 3 16g. Not complaining.

Since then however my idle has been weird, randomly seems to climb to 2-2.5k. In addition to that sometimes when shifting to neutral while driving the engine stalls. The throttle is really jumpy too.

When I hit positive boost black smoke comes out of my tailpipe and when I get to around 16psi either the fuel line cuts or it starts backfiring, I honestly can't tell. I'm also eating gas like crazy and I can smell something funky, either gas or exhaust when I hit boost. This leads me to believe I'm running super rich, and I have some larger fuel injectors that I've been hesitant to install for fear of making the problem worse.

 

[MHuddy1213]

ok have you checked for boost leaks and is the BOV recirculated?

your profile says fuel regulator im guressing its an adjustable fuel pressure regulator correct?

 

[pruitt2480]

ok have you checked for boost leaks and is the BOV recirculated?

your profile says fuel regulator im guressing its an adjustable fuel pressure regulator correct?

I haven't checked for leaks yet im planning to this week hopefully, and to my knowledge the bov is not circulated but I'm not 100% sure., and yeah it's an adjustable fpr

 

[MHuddy1213]

ok well you want the BOV recirculated 1st of all and deffinatly check for boost leaks and make sure the afpr is set to the right psi take off the vacume hose while the car is running plug the hose with your finger and set the afpr to 43.5 psi just something to make sure you do also dont install the bigger injectors without ecmlink and on a stock fuel system your running the boost levels to high max on stock fuel system is 15psi

 

[EclipsedFLA]

Check EGR also and you should cover routine maintenance, cleaning throttle body wouldnt hurt. plugs etc. good luck sounds like a decent ride!

 

[preludeachris]

I wouldn't drive that car with smoke coming out of it like that my buddy had the same problem.. his boost was more than stock but he to no tuning solution...ended up with a blown head gasket

what mods are done to it?
Do you have some sort of tuning solution?
Any way to log?

According to your profile (Tune that thing ASAP)

 

[GSTurbo1]

Sounds like your running too rich if it is black smoke, mine does it too when I get on it real hard. I would go ahead and do a rebuild since you just got it.