i installed JBA shorty headers and Jba high flow cats on a 2008 charger r/t daytona 5.7. after installation car threw codes p0420 - p0430. insufficient capacity 2nd bank cats. i installed O2 simulators to back sensors out of exhaust stream, no more P0420 or p0430, but car is throwing p2098 down stream fuel trim system 2 lean please help.
36.2k questions
32.2k answers
1.3k comments
22.8k users