GIMMExTHExLOOT

Which one shows most gain on a dyno?

i know of ls1sounds, but is there anywhere where it lists performance improvements?

BOBS99SS

iTrader: (2)

The tsp is pretty much a loudmouth 1 with a dynomax bullet I think, the powerflo is a conversion for the lm1,lm2 . Your not gonna notice powerloss or gains from these 2 imho,they both flow well ,the power flo just has 2 tips that go before each muffler,imho the powerflo sounds great,I think its one of the best exhaust out there,0 rasp