bassfishinXJ
NAXJA Forum User
- Location
- Missoula, MT
I have a 98 xj with 4.0L I have put a bank torque tube on it and a high flow cat, new O2 sensors and muffler. check engine light is on. is it possible that my new cat has too much flow causing the codes for O2 sensor failure? i have re replaced the sensors with no change. hesitation, miss-fire, bad milage. i've tripple checked header bolts wnd can find no exhaust leaks. any ideas? i looked through some older threads but didnt find any info that really helped