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Old Jan 11, 2008 | 12:57 AM
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i have the flowmaster american thunder set up right now but what is the best muffler for sound? i've heard good things about the super 40s but i dont have oo much experience with these exhaust setups...thanks
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Old Jan 11, 2008 | 01:00 AM
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I've heard that flowmaster is the worst flowing catback for the f-body but i'm not sure if that's true
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Old Jan 11, 2008 | 01:47 AM
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yeah me either...i used to have a mustang and flowmaster were great for them and im still new to the f-body stuff so i need to learn all the good stuff lol...i want a really good sounding muffler
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Old Jan 11, 2008 | 02:32 AM
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personally i ran flowmasters american thunder series and wasnt happy, i got an slp lm2 kit, and i dont think its ever sounded better, dollar for dollar, id say its the best kit on the market
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Old Jan 11, 2008 | 02:59 AM
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flowmasters do not really sound that good on our cars...if you want a good sounding muffler check out magnaflow's racing series mufflers or borla's mufflers...you will be satisfied...if you want a louder sound check out slp's (or any brand) resonator mufflers
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Old Jan 11, 2008 | 03:13 AM
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Longtube heads with nothing on them.
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Old Jan 11, 2008 | 03:30 AM
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Old Jan 11, 2008 | 11:20 AM
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if any of you could throw up some links to the mufflers you recommend it would be greatly appreciated! thanks for your help while i learn all the basics of the f bodies
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Old Jan 11, 2008 | 12:19 PM
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I'd suggest checking out some of the sponsor links on that long, grocery list to the right. Personally, I've been doing my part shopping through Texas Speed and Speed Inc., but that is only because I'm too lazy to look elsewhere (haven't bought much yet). Start looking at the sponsor stuff, and check out www.ls1sounds.com if you want to hear some of these exhaust setups before you buy - some are pretty loud while others are like muzzles.
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Old Jan 11, 2008 | 01:30 PM
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GMMG (with cats) sounds good IMO, if you want to stay with a y-pipe. www.ls1sounds.com will help you a lot with your decision. Different strokes for different folks.

Also, are you just replacing the cat back, or the headers/ypipe too? Headers, cats, and piping (x, h, y) have a noticeable effect on sound.

IMHO, I like my dumped Sweet Thunders (true duals). At low rpm's, it's tame enough to not attract too much fuzz, but screaming around redline, it makes me shed a tear.
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Old Jan 11, 2008 | 03:26 PM
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I have L/T's ORY and Borla, it sound smooth with it closed and plain raw with it open, great catback
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