When I get off the gas I hear what sounds like the exhaust popping and backfiring but it almost sounds like a chassis noise. I had it up on the lift today and for the life of me I don't see anything that could be rattling around so I am lead to believe it is indeed coming from the exhaust. I pressurized my exhaust system while I was at it and found no leaks minus a pinhole in one of the welds way back ny the rear end. The noise seems to emminate from the front left of the car. It is kinda hard to tell the car is kinda noisy anyways. Any ideas as to what may cause this?

 

Can you feel anything when it happens?

 

As long as its not like a gunshot or anything you should be good. Our cars are known to gurgle and burp on deceleration, my car does it too.

 

With a stock exhaust mine does it too I kinda like it

 

Happens a lot and not many answers why. I guessed it was from some sort of leak somewhere.

 

Mine does it too...I belevie i have an exhaust leak and my wideband is saying like 10.9:1 during WOT so im running rich.

My old Kawasaki Zx6R did it when i put a carbon fiber pipe on i loved it

Jay

 

Well I don't like it, yeah you can kinda feel it in the floorboard. I want it to go away. Or at least quiet it to a dull roar. It most definatly sounds like unburnt fuel popping in the headers. But why is their unburnt fuel in their in the first place and what do I need to adjust in my PCM to make it go away? More timing in the decel cells? anyone with a possible solution feel free to chime in.

 

ive been told that the popping is a result of unburned fuel igniting inside the cat. I've also heard this can damage the inside of the cat

 

Doesn't the air pump fix this?I dunno,I sell furniture.Anybody else?

 

Do any of you people read before you post? If you read my sig you would see I have no cat nor do I have an AIR pump. If you do not have anything helpful please do not post.

 

Check your LCA's. Make sure they're tight. It's possible if it's a chassis "clunK" it could be LCA bushings. You might even have a torn tranny mount. Do you notice the shifter move during accel/decel? You shouldn't really feel a backfire through full exhaust.

 

if it does sound like a gunshot... what would cause that? i rarely drive mine anymore and its acting up like that

 

You people? What's that supposed to mean? Anyway, I get it too. I have shorty headers, and 3 in. exhaust... Why - I'm not sure, but like you I want it to stop! Also, to me sigs are like commercials. I just don't pay attention unless there are pretty pictures!

 

Well here are some more posts to read.
https://www.camaroz28.com/forums/sho...light=backfire
https://www.camaroz28.com/forums/sho...light=backfire
Mostly more questions and little answers.

 

I got a lot of decel pop on my car as well. I have an ORY and have a Borla Adjustable exhaust and when I had the Borla fully opened, it would pop loud and often. Now that I closed it up and send all of the exhaust through the muffler, it doesn't pop as often or as loud.