this is the part #65259-00 page 567 that i had on my 05. That perticular slip-on requires no remap. can any one tell me if I can use them on my 07 and not have to remap the bike? I now I can get better performance from so other pipes and a/c but it sounds good and runs good to me.
jim
I did the same thing to my 07 as soon as I bought it. I checked with my local mechanic and here's what I was told. Changing the exhaust can make the bike run too lean. HD already has the bike running as lean, or more lean than it should. Running lean could make the engine overheat. Being as these engines are air-cooled, that could be serious. I was told to do this:
1) Remove the sparkplug and get a good mental picture of it. If it's running too hot it was develop a white chalky apperarance. If it's running right, it will be tanned colored, similar to my skin. I'm caucasion. LOL
2) Change the exhaust and crank it and listen to it run. If it sounds ok, run it down the road a few miles. P.S. Remember to put both plug wires back on. A twin cam doesn't sound right running on one cylinder. I remember thinking, DAMN, pipes made a huge difference.
3) After riding a few miles check the plug again. If it doesn't look chalky white, ride on. Just keep an eye on it for a while.
I agree with Hoist though. Due to EPA regulations, All HD's are running too lean. Best to have them all tuned in my humble opinion.