backfire thru the airbox

[adamsxb12s]

hey guys i have a 06 xb12s and it has 6000 miles. when i got it had no muffler on it so i got a stock xb12 muffler of a wrecked 08 and got it put on. well before it was backfiring thru the airbox and i thought it was from no backpressure and its still doin it. its bone stock. ive put about 40 miles on since ive bought it. can somebody lead me in the right direction? thanks

 

[LeFox]

i'm guessing there would be some interior changes to the muffler between the '06 and '08.

i would also get the AF ratio checked.

 

[adamsxb12s]

i thought they were the same i tried to find more information. yeah i think its a bit lean on the buttom end. after i get above 2000 rpms it doesnt do it

 

[burnteyes]

mine does it also xb12 08 stock. quiet loud at times
[confused]

 

[adamsxb12s]

yeah i dunno what could it be the plugs....mine has a stock air filter also it looks to be clean im kinda lost its my first buell it just dont sound right. could it be the thing that controls the valve in the muffler cuz i cant see it moving thru the airbox cover

 

[burnteyes]

I just had mine serviced a few days ago and it still does it. I keep wanting to do the hose reroute to get rid of the gasses. Thinking it could be crappy gas in my area not burning like it should. And my the white wire but I can't find it.

 

[LeFox]

just to let you know, that some puffing is normal, but it shouldn't be a frequent thing.

 

[adamsxb12s]

well mine does it like when you try to rev when the clutch is in or in neutral

 

[Lokien]

Same happens with me when clutch is fully disengaged and in neutral. Thats why I never rev in those situations . I think its the spark skip technology that causes this, to prevent excess unneeded heat.

 

[adamsxb12s]

well mine does it like when you try to rev when the clutch is in or in neutral

 

[mrdozer2you]

well mine does it like when you try to rev when the clutch is in or in neutral

It will do it more often when the bike is not at optimum operating temperature. Its probably part of the emmissions control. If you dont have to get your bike emmissions tested where you live, do the breather re-route, this should solve 99% of it [up]

 

[burnteyes]

i have the stuff to do the breather reroute but i cant find plugs to the breather box.? Any ideas on what to use?

 

[adamsxb12s]

thanks ive been told that was the reason but i wanted to see what you guys thought. i love this forum

 

[chaser]

my bike is doing the same thing, how would i do the breather re-route?, my bike also sputters and gets bad gass milage could this be the cause?

 

[FIDOSOL]

Breather Re-Route is here

 

[FIDOSOL]

You are running premium right? You're engine will run like crap on anything else, also, you might have gotten a tank of bad gas, has this lasted for more than one fill-up? Try changing your gas station... The breather re-route will help with the surging from idle-3k that is common on all of our bikes.

 

[chaser]

well i got it brand new and its been doing it ever since i left the dealership, and yes i only use premium, is ok to use octane boosters with these bikes?

 

[chaser]

thanx guys

 

[FIDOSOL]

Octane Booster is fine I use one that is good for up to 20 gallons at least every other tank. Just makes it stand up faster is all..

 

[zero]

Octane booster.. pff..
Anyway.. I just picked up my buell 08 sx. Its getting its first (and last at like 400 bucks) dealer service at 1000 miles. I was getting "burps" through the intake a few times a ride. Maybe once every 10-20 miles. I'd burp the throttle to down shift and occasionally would pop.
I had always gotten gas at the local 76, but the other day I picked up gas at costco (nearly a dollar cheaper) and I couldn't get it to pop at all for the last 100 miles.

Breaking in? DDFI 3 learning.. averaging? Fuel? Just part of being a buell?
I just know if it keeps backfiring through the intake somethings going to get broken or worn out prematurely.