Hello everyone,
Since I searched far and wide in this forum and never came up with anything regarding this matter, so I thought I would share my experience in the hopes of helping others in the future.
I have an "almost" stock 2007 FZ6 (U.S. model). I put in a K&N air filter, and recently added Leo Vince exhaust - the ones that eliminate the catalytic converter.
After I did this, the bike sounded awesome but I noticed that it kind of backfired a little bit - it sort of gurgled and popped when I was coasting to a stop, before pulling in the clutch.
More importantly, the bike had retained its horrible, characteristically jerky on/off throttle transition. I never understood why this was so poor on a fuel injected bike ... some have suggested that Yamaha did it for emissions control reasons.
Well I added a DynoJet Power Commander - PCIII - PC3 (trying to get the variations in for people searching), to smooth out the on/off throttle transition. Wow - what a difference! I can tell you that the bike is MUCH smoother in that transition between coasting and applying gas, or the other way around. This is most noticeable in turns, where you are starting to apply throttle to exit corners.
I should mention that prior to installing the PCIII, I did upload the map from the DynoJet website, for the Leo Vinces into the Power Commander. So theoretically, I was running the proper map for my setup.
The only problem that I found was, once the bike is fully warmed up to the point that the fan is starting to come on (around 210 degrees F), if I shut the bike off and immediately try to start it again, usually it would not start. It would crank over for a long time, but I finally would give up for fear of killing the battery. If I waited a few minutes for the internal temperature to drop a little, it always fired back up.
This weekend I finally had a little time to mess around with the map, within the DynoJet PCIII software program. I added a little bit of fueling to the lowest settings (the "0" and "2" positions, I believe) at the very lowest RPMs. I want to say that I added 10 into 4 different cells - I will take a look and screenshot it when I get home, for posterity's sake.
Anyway, this seems to have solved my problem. I took the bike out a couple of times this weekend, got it good and hot by riding in idling traffic, and then killed and restarted the engine - fired right up every time.
I hope this helps any other that may encounter this issue in the future.
Since I searched far and wide in this forum and never came up with anything regarding this matter, so I thought I would share my experience in the hopes of helping others in the future.
I have an "almost" stock 2007 FZ6 (U.S. model). I put in a K&N air filter, and recently added Leo Vince exhaust - the ones that eliminate the catalytic converter.
After I did this, the bike sounded awesome but I noticed that it kind of backfired a little bit - it sort of gurgled and popped when I was coasting to a stop, before pulling in the clutch.
More importantly, the bike had retained its horrible, characteristically jerky on/off throttle transition. I never understood why this was so poor on a fuel injected bike ... some have suggested that Yamaha did it for emissions control reasons.
Well I added a DynoJet Power Commander - PCIII - PC3 (trying to get the variations in for people searching), to smooth out the on/off throttle transition. Wow - what a difference! I can tell you that the bike is MUCH smoother in that transition between coasting and applying gas, or the other way around. This is most noticeable in turns, where you are starting to apply throttle to exit corners.
I should mention that prior to installing the PCIII, I did upload the map from the DynoJet website, for the Leo Vinces into the Power Commander. So theoretically, I was running the proper map for my setup.
The only problem that I found was, once the bike is fully warmed up to the point that the fan is starting to come on (around 210 degrees F), if I shut the bike off and immediately try to start it again, usually it would not start. It would crank over for a long time, but I finally would give up for fear of killing the battery. If I waited a few minutes for the internal temperature to drop a little, it always fired back up.
This weekend I finally had a little time to mess around with the map, within the DynoJet PCIII software program. I added a little bit of fueling to the lowest settings (the "0" and "2" positions, I believe) at the very lowest RPMs. I want to say that I added 10 into 4 different cells - I will take a look and screenshot it when I get home, for posterity's sake.
Anyway, this seems to have solved my problem. I took the bike out a couple of times this weekend, got it good and hot by riding in idling traffic, and then killed and restarted the engine - fired right up every time.
I hope this helps any other that may encounter this issue in the future.