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Old 10-30-2012, 07:45 PM   #1
BigTony OP
Gnarly Adventurer
Joined: Apr 2011
Oddometer: 235
TuneECU Injection Pulse reading - Screenshot

I'm trying to diagnose some rough running on my '07 990 adv. At idle the exhaust at the left pipe seems to be sputtering and weak. I already set the TPS to .57-.58v hot and sync'd the TBs as best as possible by matching the TuneECU map values at idle.

I was checking with tuneecu and I see the following:

Given that there seems to be a difference in how the two cylinders are running, based on the exhaust feel and sound, the two different values for 'Injection pulse' seem to jump out. ~2.6 on the left value and 3.1 on the right value. I also noticed when I first started the bike the O2 reading on the left read consistently lower than that on the right.

Does anyone know if this is normal? Anything I can check/test?
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