Ok, I'll try to keep this short and sweet. I'm a turbo LSJ car, blah blah, and I've been having this really annoying problem lately.
After I start the car up, and it is warm it starts idling between 16.5-18.xxx it sputters, misfires, all that jazz.

The funny part is the computer is pulling 20% fuel roughly , my LTFT's are at -20.5.
I'm almost positive I have no vacuum leaks, seeing as I've checked everything I could think of.

Things I have checked:

Maf-clean
Inj. buckets-sealed
clamps, charge piping
IM flange
IM sensors
EVAP system
exhaust leaks.

anyways, I have no clue what would cause this, or how to fix it, any help is appreciated.

Kev.

 

It just came out of nowhere? What about when the car is fully warmed up? Im going to point my finger at a vacuum leak. But then again I dont know. Edit- Are you on the hahn tune?

 

yes, I meant after it was warmed up, entering closed loop, it does this and stays like this.
and no, 06black tune

 

My car would do the same thing, but only when it was cold.

Now that its gettin wamer I will start it up and it might do it once, rev's up to about 2K, and then idles smooth.

 

What do the trims look like while cruising. I say check again for some boost leaks. Then talk to 06black to see if it might be something in the tune.

 

both trims are zero or close to cruising in vac or boost, pretty sure no boost leaks...yeah im not sure whats up

bump for ideas

 

Get with your tuner if your sure its not a mechanical problem.

 

vacuum leak

or dead D1S1 o2, check voltages

 

I found a new little nuance if this give anyones ideas, while driving, it cruises lean, and still pulls fuel, but not as bad as idle (LTFT's -6 thru-10)

Then when i get on the gas and let off, especially when i get on it hard, the car stays rich for a while like 10-13 AFR for 5-XXX seconds.

Very confused.

 

bump
I also pulled p0172 and p0455 last night

any help?