Backfiring...?
 

Hey all,
Since I added my midpipe with out a Cat and with a resonator my car backfirers when I switch gears in the 7.5 to 9k rpm...?Is this a problem?Does it mean Im running rich?I have no idea.Can you all help me out here and tell me whats going on..
Thx shark

It's a rotary... perfectly normal (tho you probably are running a bit rich). Mine did it stock, and does it a lot more with the B&B (still have the stock cat on it).