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My Hyper isn't running the way I think it should be. After spending a lot of time last year tweaking it, doing standard maintenance, modifying it, bringing it to Adrenaline, and in the end being very happy with how the bike was performing it just hasn't seemed the same since day one this year.
At the beginning of this season I noticed right away that it was idling quite high, ~1600 rpm's. I let it be thinking maybe it was a consequence of the cool temps in March/April (even though I rode into November last year). It didn't go away so I turned in each air bleed screw on the throttle bodies a half turn which brought the idle to 1300, exactly where I wanted it. All the while the bike has been backfiring on decel way more often than last season. Last year it barely did it at all, this year it does it frequently. First I resealed the silencer/midpipe with high temp RVT so there aren't any air leaks, no improvement. Then I tweaked the fuel with my PCV, adding 25 points of fuel at zero throttle from 1500-2500 rpms, this helped quite a bit, but still some popping. I'm now bothered by a much more noticeable unburnt fuel smell since adding the fuel with the PC which I guess shouldn't be surprising.
So basically my questions are, what would cause the bike to not run as well as it did last year, why did I have to turn the air bleed screws in, and I'm not comfortable with all the fuel I've added?
My order of troubleshooting now will be, check the valves, check the belts, synch the throttle bodies (all which was done last year around 4,000 miles ago) then reload the map that worked so well last season.
Any other suggestions?