| Author | Message | ||
     Salem |
I just bought a 2008 XB12X the bike has; 7500 miles, a Hawk pipe and a K&N filter. It accelerates clean & strong to the rev limiter @ 7100, but when you let off the gas it gives a series of small pops or back-fires. The seller said they all do that & the ECM on the 2008 is self adjusting. Well, I bought the bike but not his whole story. I have read the blogs of many that have had popping problems, some have re-programed their ECM multiple times with only temporary success. I am hoping that someone that has fixed this problem could recommend best way for me to fix my problem permanently. I also have a Rhino 700 that had a similar problem of small backfires when using compression breaking going down hills that started after I put a new Muzzy duel exhaust, MSM fuel control & an open type K&N filter system. That problem was fixed by putting the stock airbox back in. Apparently to much air was available & the ecm metered to much fuel. I wonder if a little air restriction would help my Ulysses? | ||
| Teeps |
Any of the straight through pipes can produce a decel pop or crackling sound. With ecm spy you can program the ecm to turn off the fuel on decel; that might fix the pop... There's a reason the stock can has packing on the end covers and a labyrinth path for the exhaust to follow. | ||
| Endoagain |
I tried numerous fixes with the ECM on my 07 after I got my drummer. Could not get rid of the decel popping working only with the ECM. Then I tried my baffle with multiple plates (no longer made) and found a plate which still allowed good performance but prevented the decel popping. I am sure some kind of baffle would help you if you are up to try that route. | ||
| Idaho_buelly |
Just get the Erik Buell Racing ECM mapped for your configuration($250) and your problems will be gone!!  | ||
| Surfsofa |
My 09 XT started popping on deceleration in 1st and 2nd following the latest firmware update. I quite like it - sounds menacing.  | ||
| Sanchez |
Popping on decel either means your bike is running lean or you have an exhaust leak. Hold a piece of tissue paper next to the header flanges while the bike's running, and see if it flutters. If not, it's a lean condition created by the pipe, and you'll need to remap the ECM (or rather get a race ECM for an 08 since there's no ECMSpy) to fix it. |
