| The pipes are very sensitive to cam timing.
They lose out on power1-2hp compared to the 54mm system under 6000rpm and produce that much more thereafter.
The Power Commander has not arrived yet, so I cannot give a verdict yet, but the system is producing about the same power, but with more midrange than my asymetrical exhaust system on the last bike. Setting cam timing resulted in an 8rwhp power increase. The cam timing to be used with thestandard ECU is 107 inlet 108 exhaust measured at the lobe centres. (standard 112,116) I will set up the PC with both this factory setting and the standard setting to compare, but te ECU does not fuel properly standard with standrd cam timing. Another glitch is the ECU has a 10400rpm rev limit. I ended up "borrowing" a Corse ECU which has a 11900 rev limit. Incidently the recommended cam timing works well with the lower rev limit. I will scan and post a dyno graph later, I have got to get rady for a track day now. |