jlfranklin
NAXJA Forum User
- Location
- Rocklin
Hey guys, i have an '86 xj i just finished putting on a brand new exhaust system (everything except headers) i have a one in two out flowmaster running twin pipes out the back, a brand new catalytic converter, and just replaced the flange gaskets up front (the donut ones up front after the exhaust manifolds or before the downpipe) and im getting this really bad backfiring, its like a thumpthumpthumpthumppop coming out of the very back when i downshift and let out the clutch any idea why this would be happening?
thanks,
Jarrod
thanks,
Jarrod