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Difference in 1999 vs 2000

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Old Mar 8, 2007 | 08:44 PM
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Default Difference in 1999 vs 2000

Hey guys, I have a question. I'm looking to have the Magnaflow Magnapack system installed on my '99 next week. The Magnaflow site lists this system for 2000 to 2004 Corvettes. The local Maganflow distributor contacted them, and was told that there is a difference in the design of the tunnel from year '99 to '00, and that there may be installation issues to overcome if we try to install it on my '99. They did say it's possible though...just have to do some adjusting of the X pipe area.
Do you guys know of any difference in the tunnel design from '99 to '00?
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Old Mar 8, 2007 | 09:12 PM
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Nope. Sure don't, unless maybe this pertains to A4 cars only. Anyone else?
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Old Mar 9, 2007 | 12:35 AM
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Have never heard of anyone mentioning a design change in the tunnel area. If the company is saying that, try and get them to be more specific as to what the exact changes are.
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Old Mar 9, 2007 | 06:29 PM
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The magnapack system might not fit because of the transmission setup from m6 to a4. But that's obvious. I just installed my old x pipe on an 98 A4 and it was for my 2000 m6. But as you already know the magnapacks fit behind the cats. Have you tried to look at the PDF install sheets to see if the numbers are all the same? If the measurements and cuts are all the same roll with it.
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Old Mar 9, 2007 | 09:16 PM
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have you already bought the system?
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Old Mar 9, 2007 | 09:24 PM
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Originally Posted by LeeJones
have you already bought the system?

They odered it, and will try installing it Monday. The shop I am using has spoken to Magnaflow, and knows how to adapt the Magnapack to my car. It has something to do with the forward muffler design of the magnapack system, but they are confident they can make it work. I'm looking forward to a system that is different from what everyone else is using!
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Old Mar 9, 2007 | 09:29 PM
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the 2000 model has different header design i know for sure. maybe a little different collector where the cats meet the headers also. dont think there is a difference in the tunnels. they are probably just seeing a different order number for the front part of the exhaust. the location of the dipstick mounting location is one of the differences in the headers for 2000. 2000 is a stand alone yr for headers. thats my .02
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Old Mar 9, 2007 | 11:08 PM
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Originally Posted by Eric 96
They odered it, and will try installing it Monday. The shop I am using has spoken to Magnaflow, and knows how to adapt the Magnapack to my car. It has something to do with the forward muffler design of the magnapack system, but they are confident they can make it work. I'm looking forward to a system that is different from what everyone else is using!

any recourse if they can't install it correctly?
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Old Mar 9, 2007 | 11:12 PM
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Originally Posted by JDs00PewterCoupe
Have never heard of anyone mentioning a design change in the tunnel area. If the company is saying that, try and get them to be more specific as to what the exact changes are.
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Old Mar 10, 2007 | 01:29 AM
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Originally Posted by rgtkst
the 2000 model has different header design i know for sure. maybe a little different collector where the cats meet the headers also. dont think there is a difference in the tunnels. they are probably just seeing a different order number for the front part of the exhaust. the location of the dipstick mounting location is one of the differences in the headers for 2000. 2000 is a stand alone yr for headers. thats my .02
Just curious, what's the header design change in the 00? I know the 01s and up had a different AIR tube location on the passenger side....
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Old Mar 10, 2007 | 01:34 AM
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Originally Posted by tstar
Just curious, what's the header design change in the 00? I know the 01s and up had a different AIR tube location on the passenger side....
The stock exhaust manifolds were changed in 2000 from the '99's and meet the cat section at a different angle. The mounts for the cat section are in a different location also. Maybe this is what the concern is about? Here's a pic of the dfference - '99 on top of a '00...

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Old Mar 10, 2007 | 01:44 AM
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Originally Posted by BSiegPaint
The stock exhaust manifolds were changed in 2000 from the '99's and meet the cat section at a different angle. The mounts for the cat section are in a different location also. Maybe this is what the concern is about? Here's a pic of the dfference - '99 on top of a '00...

Interesting, thanx!!!!
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Old Mar 10, 2007 | 06:32 AM
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Originally Posted by LeeJones
any recourse if they can't install it correctly?

Yeah, if I'm not satisfied, they'll return them, and there will be no charge to me.

I'm looking at those pictures, and the Magnapack system gets welded on just aft of the cats. So I don't think anything forward of them should make a difference.
I'm not sure if you are familiar with the Magnapack System. Essentially, the two mufflers get located just after the cats, then an X pipe, and then over the axle, and straight out the back of the car.


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