exhaust backfiring...

[jeromeA31]

guys i took out the restrictive muffler and put in an aftermarket free flow muffler, and i everything seems ok except that when i rev it and release the gas pedal it backfires! (or gives a popping sound at the exhaust)..

is this bad for the engine? or would this affect performance or the engine?

thanks..more power!

[someonestolecc]

If you're free revving mine does that too, I think it's normal with RB and SR engines sounds nice too.

Off course, it is possible there's a leak in there if it wasn't sealed properly that will back fire more too.

[konect]

I recently had a hotdog fitted to mine in place of the muffle between the cat and tip. When the car was run after fitting the guy noticed that I have a leak at the gasket just behind the cat.

My point is that mine backfires on occasions when I rev it > 5k. Usual from 1st to 2nd or 2nd to third. Hopefully its not bad for the engine.

[jeromeA31]

thanks for ur replies guys, well so it seems a little backfiring wont hurt at all...also would like to ask if i take out the stock resonator (the one located before reaching the rear differential), would this free up air flow exhaust restrictions too? or would it just make it sound louder?

coz saw on this pic (see link below) on cardomain.com , this guy took the resonator out and did a straight pipe all the way to the muffler..(oh by d way the driver of this ceffy's wasnt hurt)

http://memimage.cardomain.net/member_image...9/672846_57.jpg

[someonestolecc]

That would be loud as.

When I got my car it was dump pipe > cat > cannon. That was WAAAY too loud for the road. I had a resonator put in (hot dog style) between the cat and cannon and it's still 96db.

If you really want to know dyno it, take it off, dyno it again.

[konect]

When I got my car it was dump pipe > cat > cannon. That was WAAAY too loud for the road. I had a resonator put in (hot dog style) between the cat and cannon and it's still 96db.

Thats what mine just had put on it (hotdog) in place of the original middle muffler. I know it is too loud expecially on boost @ high rpm. Gonna get it made quiter cuz I dont fancy a defect.