i have an older hooker 421 definitally revs good and power band is ranged from 2500 to 5500, that is also with a stage 3 comp cam and 9.5:1 comp so its hard to say what exactly the header did by it self, but i know it opened the cam up quite a bit.

those doug thorly a just flat pretty. i have a buddy with that header and a 8" hi flo cat to magnaflow with 2 1/4 pipe. It works and sounds very nice. Take it from me 2 1/2 pipe is way to big and raspy sounding, kinda like a fart cannon honda, it suks.

nick on pain killers

92' Pick-up, SAS, gears to make her crawl, 37's , bullet proof motor, and alot of time invested.
06 CRF450R one mean roost flinging machine