Flowmaster and no cat???
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Elder User
Joined: Dec 2003
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From: Kokomo
Flowmaster and no cat???
Well I have 5.4 SD with a smooth 3in Y-pipe and dual 3in exhaust exiting after each rear wheel, sounds ok but still like all the rest of the SD's. So I was thinking of ditching the cat and installing a Flowmaster 40 series in place of the Y-pipe. Has any one else done this? I know it's illegal to take off the cat and all, but around here there is no testing of any kind. I know it's the big converter that gives these things there sound so buy ditching it and going to the 40 series will that give me that real V-8 truck sound??? Or is it still going to sound like the rest of the 5.4 SD's????? Thanks for the help!!!
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Joined: Jul 2004
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From: People's republic of MA
It'll sound better... but it'll smell terrible... Get a high flow cat and a flowmaster (I prefer magnaflow, but to each his own) and put both on there, then it wont sound like all the others
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