Hey

I just put on the V8 cat back on my V6. Sounds great and all, and def made the car go a bit quicker, but its backfiring. Im told its supposed to do that. Is that true? My friend has a flowmaster on his V8 and it backfires as well. I dunno. I would recommend everyone trying to mod a V8 cat back on their stock V6. If you look in the muffler the 2" inlet drops down to less then 1.5". So its really restrictive.

-Peter

 

if you are backfiring when accelerating then you have a problem. if backfiring when revving up or decelerating then it is normal.

oh by the way nice audio system. how do you like those JL XR's? i have XR components in the front, and coaxil's in the rear running off a JL 300/4 amp. i also have 2 12 W3s in a custom box running off a JL 500/1 for SQ, and 2 JL 15 W1s for SPL off the same amp. i love the XR's though they are a very clean sounding speaker.

 

Backfiring and back pressure are two totally different things. If you hear a poping from the exhaust pipes on deceleration or when you let a gear wind down this is normal. You can really hear a backfire, I'm guessing your describing the poping. Some people like it, some dont. Personally i do.

 

Another vote for backfiring upon letting off the gas being normal.