out of tuning staller

[bluevwfan]

Hi everyone, hoping you can help with my problem . The car stalls whenever it is in idle and you step on the ggas to go. The previous owner told me the car was chipped don't know which one. I've checked the tps, the maf, changed the plugs, gutted the cat, put a k&n filter and checked the computer for codes. Nothing.
The car was knocking whenever the boost went up so I reduced it to about 10-13 psi.Any info is greatly appreciated.

[Turbo2nr]

I'd say check the IAC numbers at idle when car is warmed up. Do you have a way to check that? Any other problems? Maby a bum MAF. Can you check that at idle and WOT. Could be a bad 02 sensor.?

[Keller]

I'd suggest doing the minimum air adjustment procedure, TPS setting, and IAC adjustment. All affect one another, so you may have to repeat.

[bluevwfan]

Ok, I'm gonna try and adjust those things this week and see if anything changes.