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Old Jan 3, 2007 | 04:17 PM
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Default true duals mufflers

What would be a good set of mufflers to run on a 5.3 Avalanche with custom true duals set up that starts with a set of long tube headers and cats...
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Old Jan 3, 2007 | 04:30 PM
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I'd go with some Magnaflow 4x9 ovals or something of that nature...if you want a bullet, I'd hands-down do the Borla XR-1s (although they only come in 3", not 2.5" like I would need). I really like my Magnaflow bullets, but they will snap a cop's head around in a real hurry if you get on it.
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Old Jan 6, 2007 | 10:36 AM
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Originally Posted by MeentSS02
I'd go with some Magnaflow 4x9 ovals or something of that nature...if you want a bullet, I'd hands-down do the Borla XR-1s (although they only come in 3", not 2.5" like I would need). I really like my Magnaflow bullets, but they will snap a cop's head around in a real hurry if you get on it.


Thanks for the input..dose anyone else have a recomendation ..
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Old Jan 6, 2007 | 02:10 PM
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I'm a fan of ultraflows. I had a stainless ultraflow welded in place of the Bassani muffler in the Bassani true dual exhaust and it sounded awesome. Very clean real deep and good tone. Check out the clips on my web page for sounds.
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Old Jan 6, 2007 | 02:17 PM
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Flowmaster 2 chambers (aka 40 series).

Very popular with Stang guys. The only reason that LS1 guys do not run them is because they don't fit under our cars; you would not have that problem.
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Old Jan 6, 2007 | 06:15 PM
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Thank yoo for your responces..rememberr this true duals is going on a Avalanche..
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Old Jan 6, 2007 | 07:14 PM
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i'm not sure on the perfect setup but if your looking for some SweetThunders/Powersticks in 2.5" i have some (new in box) if your interested. i was gonna use them but i cant make my mind up on what i wanna do.....
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Old Jan 6, 2007 | 08:48 PM
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Originally Posted by slt200mph
Thank yoo for your responces..rememberr this true duals is going on a Avalanche..
Keep in mind the ultraflows are a full size muffler, so it will sound much more refined than normal dumps and bullets. Also, since it's straight through, it will have virtually no backpressure.
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Old Jan 6, 2007 | 09:39 PM
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you want 2-chamber flows hands down
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Old Jan 6, 2007 | 09:47 PM
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Magnaflows would be my first choice.
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Old Jan 8, 2007 | 09:33 AM
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Originally Posted by orangeapeel
Magnaflows would be my first choice.
Some 4x9's would sound sick w/longtubes & cats.
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Old Jan 8, 2007 | 09:53 AM
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Originally Posted by jmm98LS1
Some 4x9's would sound sick w/longtubes & cats.
Correct!
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Old Jan 8, 2007 | 10:17 AM
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Originally Posted by SSwanner
i'm not sure on the perfect setup but if your looking for some SweetThunders/Powersticks in 2.5" i have some (new in box) if your interested. i was gonna use them but i cant make my mind up on what i wanna do.....

what length are they
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Old Jan 8, 2007 | 05:02 PM
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I like the Flowmaster 1 Chambers,
my TREX kind of hits you in the chest now at idle (standing behind the car)
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