I was wondering if you put any type of fuel mapping device on it?
Because the bikes factory set up is lean of the optimal stoich setting.
Becareful because you could do alot of damage if the bike is run in a lean condition!
I was advised by the mech.at my dealership to put a juice box or similar device on my factory set up bike because the bike is already lean from the factory.
Im beginning to wonder if these dealers are getting kickbacks from the manufacturers of Power Commanders...
My dealership told me the same thing: OMG, dont put slip-ons on without putting on a power commander!!! We can sell you one for $465!
Several others I have spoken to, including custom bike builders, have told me that these things are fuel injected - and the PC has to adjust for differences in altitude - when the fuel mixture slightly leans out. Installing exhaust pipes only will only slightly lean out the mixture - and the PC will adjust itself for it.
Now, if you go opening the airbox up, or installing a freer flowing air filter, the mixture gets WAYYYYY leaner, causing the NEED for a power commander.
But with just slip-ons, you are fine without a power commander.
Ive got m4 slip-ons on my 2010, and I notice no drop in power or other issues. Cant even tell the exhaust valve was removed.