Accufab..prob the best on the market...like you said , and the tech said...3-5 rwhp..at best. I know b/c I have one, and did a dyno pull before and after.
My wifey bought it for me because its SHINY :D. :). :rock:
Damn....if long tubes got me 20, and a tb got me 20, and UDP 15, and power...