GMC5.3

iTrader: (2)

Just got this 02 ls1 and it has an aftermarket catback but no markings on it. Im debating on whether or not to cut my magnaflow off my LT1 before i sell it and just switch it up. It has a alright sound to it but since i dont know the brand all ive read is that magnaflow flows better with LS1's.. Sorry the pics arent the best.





Being that the ls1 has a manual cutout i guess i always have that for sound, but it just seems like the magnaflow catback on the LT1 has a better sound at cruising speeds.

poltergeist 02

iTrader: (65)

maybe flowmaster?

trans_am7935

iTrader: (15)

that is what i was thinking, it is a pretty short muffler...did you by any chance buy this from a guy that owned a mustang, lol!

GMC5.3

iTrader: (2)

No he had a beamer, so switch it up then ??

Ronny_02_WS6

iTrader: (6)

My car came just like that, it was a flowmaster 80 with the stock piping crushed, with the crushed tips it gives a little bit more of tone. I went with my sig mods (Magnaflow).

andrew69_04

iTrader: (148)

its either a flowmaster or a similar design knockoff off ebay, or possibly an IMCO muffler. just a louvered can. magnaflow is much nicer

216StealthSS

the logo is probally on the top of the muffler... looks like a flowmaster.. maybe a dynomax? lol i would put the magnaflows on it as i have them on my SS