ChevyDude84
OBS Enthusiast
not to bring back a old thread, but as far as the Fm and the Thrush welded as AM2 stated, they dont flow too well because of the design of the muffler, the internals have ports/flanges on the inside that allow the exhaust gases to " bounce" off these walls to create that distinct sound, then exit the tail pipes... kind of robs performance. I am looking for that thrush/fm40 sound but have good flow... still on that quest lol
I will check out those spintechs
I will check out those spintechs