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Akrapovic full exhaust popping/backfiring?

10393 Views 13 Replies 12 Participants Last post by  abzx10r
When I downshift in to 1st gear sometimes (2nd and 3rd) when preparing to stop my exhaust makes a popping/cackling sound. I think it sounds pretty sweet, but is this causing any damage to the engine? Running lean, etc? Or....? Does anybody elses exhaust do this? I figured that since the full exhaust removes the cats and all that that this is probably pretty normal and common? :dontknow:

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Thanks for the input fellas! I am running a Bazazz z-fi unit w/ custom map, ivan's block offs, and BMC air filter.... I suppose I could just as the fellas in the shop at the dealership and see what they say.. :thumbsup: I'm not really worried about it, other than the fact that I don't want any engine damage (obviously). I actually like the sound!
I haven't seen a bike with a custom map and block off plates backfire.

Don't worry about damage. The popping/backfiring is unburnt fuel. Your probably running a little rich. Some tuners like to tune rich at high rpms to cool pistons a bit.

To avoid the "popping" on decel, when possible, just roll off the throttle slower.
I have a Bazzaz map (akrapovic) that's lean and runs really strong. Let me know if you want it. I have a toggle switch and use it for straight line speed.

I would like to have a look at your custom map if you don't care. Just PM me
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