07 RTX backfiring

[Terminator]

When I let off full throttle and just let the engine breaking slow me down sled backfires sometimes. I only have 2200 mi. on it, any ideas???

 

[ROCKRTX]

Exhaust donut!.......or header crack.

 

[YamerHammer]

Take 2 rags and put them over the exaust when it's running and if you can get it to stall or drag the engine down they are good if not you will hear the leak somewhere under your seat.

 

[Terminator]

Take 2 rags and put them over the exaust when it's running and if you can get it to stall or drag the engine down they are good if not you will hear the leak somewhere under your seat.

I'll give it a try YamerHammer, thanks. So an exhaust leak can cause backfire?

 

[torque monster]

Checked mine today, 3 donuts were gone, only backfired on decel. I am going to cut off half of the tubing/collar on the clamps so they tighten up more!!