Misfire/Lean/Cold

[The91TalonTSI]

Okay 1. The topic title search (BADASS!!) but didnt come up with anything close to my delimma. Okay When I start my car up right on cold and drive between 800RPM and 3,000RPM or until boost hits more than 6PSI the car acts like a dog and its hard to get it to go anywhere at all. I have fixed all boost leaks, New Fuel Pressure Reg., New ECU. New MPI Relay, New ignitor, 390 Injectors, New CAS, New plugs and wires (had coil on plug and removed it), Timed the car its at 7 Degrees (Alldata says 5 Degrees +/- 2 Degrees) When it gets fully warmed up its runs better but when boosting at 15PSI A/F is 10.-11.6, when releasing the throttle it sputters and A/F goes High Lean. This is the only problem thats been confusing me. A few people have said the Temp sensor or MAF could cause these conditions but Id like to get a little further help in diag before I spent more money. If I did bypass a thread on this I am VERY sorry but I just dont want to damage my motor

 

[nickk90]

Okay 1. The topic title search (BADASS!!) but didnt come up with anything close to my delimma. Okay When I start my car up right on cold and drive between 800RPM and 3,000RPM or until boost hits more than 6PSI the car acts like a dog and its hard to get it to go anywhere at all. I have fixed all boost leaks, New Fuel Pressure Reg., New ECU. New MPI Relay, New ignitor, 390 Injectors, New CAS, New plugs and wires (had coil on plug and removed it), Timed the car its at 7 Degrees (Alldata says 5 Degrees +/- 2 Degrees) When it gets fully warmed up its runs better but when boosting at 15PSI A/F is 10.-11.6, when releasing the throttle it sputters and A/F goes High Lean. This is the only problem thats been confusing me. A few people have said the Temp sensor or MAF could cause these conditions but Id like to get a little further help in diag before I spent more money. If I did bypass a thread on this I am VERY sorry but I just dont want to damage my motor

When you let off the throttle its going to go lean that in normal. I'd try a new coolant temp sensor.

 

[tjohn23]

check for exhaust leaks or throttle sensor before spending money. when my hotside was leaking exhaust through the wastegate i had lots of problems