Yeah I was thinking about looking into the sort Of stuff... Just need get everything on it that iv all ready got first haha. Finally got around to putting my extractors on last weekend can feel the power gain but was hoping it would crackle on downshifts a bit but it doesn't ... Any ideas how I can get it to do this?

well so far on my bf xr6 i have got the growler ss induction high flow cat and i was pushing 155 at the rears, i'm getting custom cams installed next week and i just got extractors put on and all that and a custom tune i should be pushing out at least 200 rwkws.

Once you get a high flow cat she should crackle abit, standard cat stops alot of the crackle sadly.. and it depends what size exhaust and what mufflers/hotdogs you have,