question about magnaflow exhaust - Diesel Truck Forum -
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post #1 of 3 (permalink) Old 02-25-2008, 11:04 PM Thread Starter
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question about magnaflow exhaust

has anybody installed a magnaflow system on a 2007 classic body style extended cab shortbed. part number 16909. they say its for cc shortbed will it work has anybody done it.its a 5 inch turbo back kit comes with the down pipe. im sure you have to cut some off somewhere.thanks jason.
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post #2 of 3 (permalink) Old 09-25-2009, 08:50 AM
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That kit doesn't come with a down pipe, it is a down pipe back system. The only 2 companies that make a downpipe for our trucks are Diamond Eye and MBRP both are around $200 and are an aditional cost to the price of an exhaust. All GM exhaust kits for the duramax are down pipe back systems.

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post #3 of 3 (permalink) Old 09-27-2009, 05:56 AM
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if you need to cut some off, lay the original system along side the new system to see where and how you need to cut it off, make sure that where ever you cut the pipe that your hangers still line up fairly close, put the new system under the truck, see how it fits, dont tighten anything, once your happy with the length and the fit you can tighten it all up and you should be good to go , the GF's dad put a magnaflow system on his 01, nice system, fits nice, sounds pretty nice too, loud enough to make people look, but doesnt drone inside the cab at highway speeds

on the 07 its a PITA to get the back half of the original system out in one piece, you have to jack up the back end of the truck in order to create enough clearance between the axle and the bed, you can get it out with some twisting and a lot of cursing, the front pipe is also a PITA, you have to unbolt the transmission cross-member, make sure to put a jack with a block under the pan so you can keep the transmission in place, unbolt the bolts from the downpipe back through the front passenger-side inner fender, thats the easiest way, take the plastic fender liner out

Hope that helps

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