Originally Posted by Ganno57

The lack of back pressure is what the problem was. I should have mentioned that I had already gutted the cat before the mufflers went on. I tried a set of V&H twin slash mufflers without the cat and did not like the way the bike ran. At highway speeds the bike did not have the acceleration like it did with the stock mufflers. It made more noise but there was no go. No other work has been done and I am still running the stock air cleaner. Once I put the mid range baffles in all the BS went away. I had ordered the mid range baffles when I sent in the mufflers in anticipation of the lack of back pressure and thought I might want to quiet them down a little. I prefer the look of the stock mufflers over everything else I have seen from the aftermarket and these do sound good.

Originally Posted by apxpred

This is the route I'm taking as well except I'll be adding the Fuelmoto AC. How close was the map you got ? Any tinkering to get it right ?