Backfire!!!!

thechad842

Registered
I just purchased a 07 busa with a roaring toys megaphone exhaust and a power commander and i have a bad back fire problem a deceleration. This is my first busa and I'm just learning about this bike any help would be great!
 
The marble mod is easy, but the pair valve removal would probably take care of your problem and remove a little weight.
 
had this pipe for 3 years and ive had the same prob...only solution is get rid of it like i just did its a real POS,,,or i tried adding the pair valves small ,air box mod, new spark plug and gaskets and PC3 and Dyno but its still garbage
 
You remove the pair valve, or block it, or just drop a marble down the hose.
 
Dump the pair valve. If that doesnt work check your maps..I belive backfire on accel is too rich, and on decel is too lean.
 
I had a Micron and did not have this problem, now I am rocking a full TiForce and it backfires alot when shifting. ''

I think the tubes are bigger and it is throwing more fuel to keep up with the air but not the proper ratio.

Time to go tune the old pc and see what happens. wish me luck
 
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