Originally Posted by OneBadGMC
http://www.youtube.com/watch?v=QIz2bSo8ScY
Yeah, Flowmasters are junk. :roll: I'm only making about 1600 crank HP through 4.5" Top 10s (probably more than that given the issues on that pass).
Sounds like they work for you. Are those chambered or straight through? Also what kind of sound reduction do they give you? Also have you dyno'd with open headers in comparison?