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Old 06-28-2017, 06:33 PM   #7
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Join Date: Jul 2008
Location: Garfield Heights, OH
Posts: 453

1999 SL2
Default Re: Replacing full exhaust downpipe(+flex) vs cutting in new flex pipe?

Originally Posted by fetchitfido View Post
With 3rd gens (well, '99+) the only reliable fix is to cut out the bad section and weld in new pipe. Nobody aftermarket has reliably gotten the manifold flange height/angle and downpipe bend angle even close to correct like they have for '91-'98's.

New flex pipe = under $20
Welding = ~$50

after looking at the pictures:
I'd try to find someone with a welder to just fill in the holes around the clamp. Can't see how bad the flex pipe is but the exterior metal mesh isn't part of what seals up the exhaust in that section.
That's not entirely true. My 99 SL2 with a build date of 6-19-99 has a Bosal 0795190 down pipe and catalytic converter on it and it fits perfectly. There are no clearance issues with hitting the subframe or transmission and the flange is welded on with the correct angle.


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