backfire from your hyper?

[nethern]

I notice my 796 has bang bang from exhaust when slowing down to traffic lights. My hyper is everything stock when this happened.

Your hyper does that too? What's the problem?

[remery]

Problem?

[Drinky]

small, machinegun like pops on decel --> lean mixture

big, loud pops/bangs on decel --> rich mixture.

Mine doesn't do it.

[nitsuj8686]

Originally Posted by Drinky

small, machinegun like pops on decel --> lean mixture

big, loud pops/bangs on decel --> rich mixture.

Mine doesn't do it.

[stryder]

Backfire is a combustion out the carbs/tb's, ie "back up the intake track" and indicates a timing problem; after fire is in the exhaust, ie a combustion "after the combustion chamber." A little "popping" on hard decel/overrun, is not that uncommon and not a major concern IMHO. Big ones may indicate a problem with mixture as mentioned above.

[ccemn1]

Mostly caused by 'Cam Overlap' and bikes coming from the factory so poorly mapped, in order to meet EPA Regs.
Like I said before; Anytime I buy a new bike with FI, I just figure into the cost a Power Commander, or any other ECU interface, and a custom Dyno tuned map. Try it, you'll feel the exact same way!

[lexunet]

Mountains, downhill, deceleration,... backfire every time!

[vb796]

After my reflash I still hear a little gurgling on decel but I like it .

[nethern]

Now i have dyno tuned, but I still have some little pops, but not as often.