82 911 sc
 

car starts up runs for 15 seconds smoothly but wont rev up with out spits sputers and backfires after stainless early exhaust installation

RE: 82 911 sc
 

hi, you said you fitted early exhaust system to the car. does the new system have a slot for an oxigen sensor, if not then that is your problem, you need to have an oxygen sensor fitted to your headers. whatever the case is I would start from checking or replacing the oxigen sensor, because it sounds like that is the problem, maybe you damaged it while removing the old system.

RE: 82 911 sc
 

I would double check your CO, sounds like you probably have a lot more air flow now, and are running a bit lean.

RE: 82 911 sc
 

bought car from penske in 1988 and never had a o2 sensor in stalled