So I know the answer and have an appointment at the dealer in the morning. But...Cobb cat back and Green Filter are the only (engine) mods. Battery was out for about an hour while I installed the shifter. Car sat about a week and did exhaust before any driving. Runs OK, but I felt like the fuel mileage was not reporting as high as it should. Now 160 miles after exhaust, I got a CEL. Car seems to run normal except for what I perceive as worse fuel mileage. Going to check the basics of stuff I took apart to get the batt out, but other than that! Any ideas? Did not pull any codes since I already have an appt for the morning.
Anyone have reduced fuel mileage following exhaust? Was getting easy 28+ On the freeway and now after a full day on the road today she's barely showing 25 if I'm lucky.
Anyways, just thought I'd throw it out for discussion. I have heard there's a timeframe for learning after having the battery disconnected. Could that be a player? Would you try disconnecting the battery again to see if it resets the CEL? I do not disconnect the battery during/after the exhaust install; would you have done that?
Anyone have reduced fuel mileage following exhaust? Was getting easy 28+ On the freeway and now after a full day on the road today she's barely showing 25 if I'm lucky.
Anyways, just thought I'd throw it out for discussion. I have heard there's a timeframe for learning after having the battery disconnected. Could that be a player? Would you try disconnecting the battery again to see if it resets the CEL? I do not disconnect the battery during/after the exhaust install; would you have done that?
