I have an 05 r6 and ive noticed that when im about 5000 rpm and keep a steady throttle theres a glitch. It starts to go on an off like i was giving it gas and taking it off. Is this normal? It only happens when i keep a steady throttle at 5000 rpm. Thanks

i know right around 5000 - 6000 rpm the ECU tries to balence the engine to stay steady and smooth at the speed since that is the average cruising RPM for most riders in traffic. That might be what your feeling. But it could also be a clogged fuel filter. Are you using nothing but 93 octane? Are you getting it from a well known and busy gas station? How many miles on the bike?

Just from being an asst manager at a gas station a while back, i know if the place isnt busy all the time or you dont get it from a good well know source then most of the time the gas you get can be either "dirty" (Filters not changed at the gas station often) or its stale cause its been sitting too long. So for what its worth i would start with that.

Does this occur in all gears?

The ecu is written with different fuel delivery maps for different gears, throttle positions, rpm, etc. Now at 5k rpm, that is basically when the r6 starts to come onto power. So if you're at very little throttle the ecu is gonna give a little gas to hold the speed then surge and accelerate, so it cuts the fuel because it thinks the motor is running away. Then the bike lags so it gives more fuel. Now this is all happening 32x a second, the '05s were upgraded to a 32bit processor. So you feel a "glitch" but you really just in a poorly mapped situation.

Carbed r6s usually do it at 6500 rpm, right when the main jets would start to open.

i know right around 5000 - 6000 rpm the ECU tries to balence the engine to stay steady and smooth at the speed since that is the average cruising RPM for most riders in traffic. That might be what your feeling. But it could also be a clogged fuel filter. Are you using nothing but 93 octane? Are you getting it from a well known and busy gas station? How many miles on the bike?

Just from being an asst manager at a gas station a while back, i know if the place isnt busy all the time or you dont get it from a good well know source then most of the time the gas you get can be either "dirty" (Filters not changed at the gas station often) or its stale cause its been sitting too long. So for what its worth i would start with that.

Yes i only use 93 octane fuel from Texaco or Shell, and i would say there the most busy gas stations around. My bike has less than 700 miles on it. And ive noticed the glitch happening in third and fourth gear.

Ill just try to shift to another gear or give it a little more gas cause it only happens at exactly that spot 5000 rpm. The tiniest amount of throttle snaps it out of it, its the steadyness of throttle positioning while on the highway that without paying much attention to the tack i end up in the glitch area.

I have the same bike with the same problem I think it's where the power band starts, to come in strong.

i have an '04 and on mine at 5 grand the power band kicks hard and it really starts to pull. it doesnt buck though. if its doing that, you might want to get it checked out, mapped maybe. especially if you have changed anything on any of the engine systems, ex, k&n filer, exhaust, a slip-on doesnt usually require a re-map but if its acting funny its something you might want to consider

I have the same bike an 05 and I got it checked out by the dealer and it is just where the power is showing up. The computer is starting to deliver a different air fuel ratio for a more aggressive acceleration

--JD


Just down shift one gear. The R6 likes revs anyway :D