icefire069

I'm having some problems with my sister in law's car. Its a MTM chipped stock TT with front mount, forge bypass, and milltek exhaust. She's cruising at 60mph and when she pushes the car it stops boosting and reverts to 5psi only....

I need help diagnosing this car. Checked plugs (a biatch to do) and oil levels are checked every morning and no problems. Reset the ECU and it goes back to work like nothing happened. No cel when checked at dealer. Checked the vac/oil lines and the turbo is still good.

I'm stumped

TTschwing

As they go, the partial throttle adaptation gradually ratchets up to +20%. when it hits that value, the car will go in and out of limp mode that you are experiencing (it senses a too lean condition). When you reset the ECU, these values are erased (temporarily) but return, due to the low MAF signal. 98% sure that's the problem...