In my car I have a set of TTI's step headers 2" to 2 1/8" and 3 1/2" collectors and a TTI 3" exhaust and on the dyno I'm not exactly sure but Nick said they weren't a step header but were similar sized anyway.
I probably won't make it to the track until Fall because I'm shooting to just be on the road by 4th of July weekend and by the time I finally get everything sorted out it'll be September.
