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3.5" or larger catback?

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Old 04-07-08, 09:31 PM
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3.5" or larger catback?

I don't like my current exhaust setup which is custom 4". What choices do I have for exhausts that are 3.5" or larger? I would prefer something quiet. I did a search but only found one thread that was few years old... Thanks in advance.
Old 04-07-08, 09:43 PM
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I say use Borla muffflers

You can certainly find some of them with in/outs of 3.5" and bigger, have a relatively smooth tone to them, and fitting 2 of them for that LS6 will certainly help quiet it down.
Old 04-07-08, 10:13 PM
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SMB has an awesome 3.5" turboback
Old 04-08-08, 07:55 AM
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+1 on the SMB...incredible exhaust. deep and subtle note, and super high flow capacity.

www.smb.net.au

check
www.fdowners.com for some sound clips (Somewhere in there )
Old 04-09-08, 04:09 PM
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Thanks, guys. SMB looks and sounds nice but it's way too expensive...
Old 04-09-08, 04:19 PM
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gt spec is 3.75 but is loud, might need a silencer
Old 04-09-08, 05:12 PM
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I'd like to know what the difference in peak power is for a mildly tuned FD (say GT35R) between a 3.5 and 3" full exhaust

what is the flow rate?
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