So for anyone that remembers, I was having some trouble with pinging when accelerating hard in 5th gear. I had run some bad gas through the bike and blamed it on that, but two tanks of fresh gas after and it was still doing it. On the third tank it stopped, and as hard on the throttle as I could it would not ping. Anyways, it just started again in 5th and 6th and I got the fuel from my regular spot where I don't usually have trouble. I was told by someone on here that I should try changing the fuel filter, but after it went away I got lazy and didn't bother because everything seemed fine. Now I'm not sure what to do... If I thought it was just the tuning I would just bite the bullet and get the auto-tune for the pcv sitting on my shelf. What do you guys think?
I'm running a 103", SE255 cams, V&H BSL, S&S a/c, and a HD 103" flash.

 

My buddy was having the same problem. He traced it back to early detonation of fuel causing the piston operation to fault. He said it was because he was running too lean. He was getting too much air and not enough fuel.

 

If you have that power commander lying around put it on and get ya a tune.

 

It's most likely in your tune. I would get a good tune from a reputable tuner.

 

U running premium fuel?? U didn't say.

If so then thinking U need a dyno turn instead of a flash with a good F/M tuner.

 

the only way i got mine to stop was to ret.timing a couple of deg. with a tts.

 

SE255 cams + HD 103 ECM flash = poor state of tune. Auto tune might not tune out the ping; a dyno tune is required. If the ping is bad enough, taking out timing might be the fix but performance will suffer.

Run some octane boost to stop the ping until you can get the dyno tune. If the dyno tune doesn't solve the problem and maintain satisfactory performance, replace the 255s with cams with a later intake close, say 38*-40*, or retard the 255s with a 4* sprocket.

Been through this drill before and a cam change was the best solution.

 

thanks for the tips. I'm gonna try the auto tune i think and see how that goes. I really should have it anyways. And yes, I always run premium fuel. I'll try the octane boost until the auto tune comes in.

 

Auto tune won't adjust timing. Adding fuel where the ping occurs could solve the problem. If auto tune doesn't eliminate the ping; a dyno tune will be required and, like I pointed out before, by the time you back out enough timing to eliminate the ping, you may lose performance. Cam change or retarding the 255s is the next step.

 

I know you said before the Maps Jamie at fuelmoto was sending you were not running well. Try going to powercommanders site and look through their long list of maps available for the PVC and give that a try before you fork out the money for autotune.