Pontiac GTO 2004-2006 The Modern Goat

05-06 Magnaflow Exhaust on an '04

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Old 02-11-2010, 10:08 PM
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Default 05-06 Magnaflow Exhaust on an '04

Hey, Just wondering what i would need to tell the exhaust shop before they install the exhaust. I know that it needs the bumper cut for the dual exit. Anything else?
Old 02-12-2010, 09:35 AM
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The 05/06 catbacks don't line up with the 04 mid pipes. Usually, people with headers use 05/06 mid pipes along with the 05/06 catbacks. Do you have headers or stock manifolds? Not sure if the stock 05/06 mids fit onto the stock 04 manifolds. One other thing besides the bumper cutout is that you need to have the shop weld in a passenger side muffler hanger.
Old 02-12-2010, 11:04 PM
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stock 04 mids. Do you think an exhaust shop could widen the outlet of the 2.25 mids?
Old 02-16-2010, 07:48 AM
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You are def going to need 05/06 mids bc the 04s point outward which doesnt lineup at all. Had this done on my 04 but i had the 05/06 rear bumper converted. I think the big plastic cover would need to come off underneath and obviously some cutting on the 04 bumper to make the duals fit. Also as he said an extra exhaust hanger welded in on that side.



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