Searched...what size Magnaflow?

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May 14, 2007 | 07:07 PM

BlackHawk T/A

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From: Lincoln, NE

Searched...what size Magnaflow?

I have duals and will be taking them over the axle into a muffler to quiet things down and running a cutout before it. It is a 3" system that will go down to 2.5" after the cutouts.

I need to know what Magnaflow to go with. There are a few options for 2.5" dual/dual:

5" x 8" Oval
4" x 9" Oval
5" x 11" Oval

Thanks.

May 14, 2007 | 07:16 PM

CAMAROZ28AQUINO

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From: North Bay, Ontario

I'd go with the 4x9's, ive heard these muffflers on camm'd LS1's and they sound Nasty as hell

May 14, 2007 | 07:45 PM

teke184

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agreed...i have the 4x9s on my cammed LS1...and it sounds great!!

very mellow at cruising speed but really a clean sound when you romp on it

May 14, 2007 | 08:20 PM

dug

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From: Phoenix

I sold my 4x9 muffler to fasttimes1. He said he was installing it last weekend. talk to him

May 14, 2007 | 08:30 PM

dug

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From: Phoenix

https://ls1tech.com/forums/showthrea...3&page=1&pp=10

at the bottom of the page there are some pics of the 4x9 muffler. If you look carefully, you can see the xpipe.

I vote for using the largest muffler so its nice and quiet. Since you got cutouts if you want loud.

May 14, 2007 | 08:41 PM

BlackHawk T/A

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I just don't know what fits. I noticed most people go with the 4x9 but why?

This is going in the stock muffler location. There will be Powerpacks after the X. This is why I am choosing from the 2 in 2 out mufflers.

So it will be:

Pacesetter Longtubes
3" X-Pipe
3" Powerpacks
Electric Cutouts
Down to 2.5", over the axle
Magnaflow muffler
Corsa tips

May 14, 2007 | 08:44 PM

dug

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From: Phoenix

cuz they putting them under the car before the axle. they need a short muffler for ground clearance.

Im running a 4.5"x9.75"x24" muffler in the stock location with plenty of room.