miss on hard acceleration and shifting

[gp637]

On the last ride I noticed a miss when shifting. Actually it feels more like the engine is cutting out but just for a franction of a second. I first noticed it, oddly enough, while wheeling and shifting from second to third. The front came crashing down, like I had missed the shift. I then started to notice the bike cutting out during hard acceleration. Again, it sputters, like the engine is cutting off for a split second, and then picks right up again. I called the dealer and checked the forum, but it seems like no one has encountered this. Any ideas?

[CDONA]

Some may have experienced this. With all the fuel mods; DP ECU and PC111 enricheners the fuel pump may be maxed out on flow on the upper rpms. This hasn't been confirmed yet with science.

[dukepilot]

Originally Posted by gp637

On the last ride I noticed a miss when shifting. Actually it feels more like the engine is cutting out but just for a franction of a second. I first noticed it, oddly enough, while wheeling and shifting from second to third. The front came crashing down, like I had missed the shift. I then started to notice the bike cutting out during hard acceleration. Again, it sputters, like the engine is cutting off for a split second, and then picks right up again. I called the dealer and checked the forum, but it seems like no one has encountered this. Any ideas?

Make sure your battery cables are tight to the battery.

[gp637]

checked the battery, but the terminals are all tight. And re: the previous post.....I don't think it has anything to do with RPM's, I can duplitate the problem at the mid RPM range.

[dukepilot]

Was anything done to the bike (servicing, any changes) prior to noticing this problem?

[MrDude_1]

might be time to change the spark plugs...
my 749 does that, then i change plugs, and it wont do it again for another 8,000 miles or so.