Looking for an Akrapovic

[Frank Adams]

Dp, I might think your bike could be a little rich if the changing of the fuel made that much difference.

If you had the Pw2 on the dyno; I would have backed the high side down(leaner) until you started seeing it break up on the chart.

[OB_JohnnyB]

There you go DP, I'm right behind you. Ran 152 HP w/air box mod only on MTBE crap gas.
Adding Akra,PC II, BMC filter. Losing PAIR system. I will dyno again w/MTBE for a good comparison then remap when the good gas is back. I'll post results

[OB_Dirty Pete]

Frank I did go -5 on mid and top and it did deliver 2 peak hp. I' sure you're right and I should have experimented downwards. But I'm not going to try to perfect this set-up any more as I'm awaiting Yosh cams and a PC2 and won't retune until they're in. Thanks for the tip!