Nice oly1981.... Thanks, not made time to look at their site. Dillon from Dobeck did mention that a stage 1 kit was being developed and that included (I think) aftermarket exhaust, fuel controller and air filter. I think P5 exhausts are all one piece, so will be interesting to see what HMF and Big Gun come up with. Presuming entire exhaust will be replaced from cylinder exhaust port to and including muffler? I trust the O2 sensor bung will be integral on their respective pipes? Guess the other option maybe to trim off everything down flow just infront of O2 sensor and replace with slip on system, I don't think there is room between stock O2 and Cat to cut and clamp slip on system although I could be wrong.
jrc
Yeah I'd like to see most of the emissions come off when I do the upgrade! A exhaust with out a cat would be nice! I know when ever I've taken off my emissions I've always gained enough power that I can feel it.