Thread: Z3 Roadster (E36/7) Exhaust?
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Old 12-15-2012, 11:09 AM
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vintage42 vintage42 is offline
BMW CCA 1405
Location: Louisville, KY
Join Date: Jun 2007
Posts: 3,760
Mein Auto: 1997 BMW Z3 1.9 5MT
Originally Posted by gbirkemeier View Post
Is therenany significant difference between a full cat back exhaust and just replacing the muffler? I cant imagine there is that much power to gain by a full exhaust and the cost diffrence is pretty large.
I think this is the rear section of your exhaust system containing the muffler, called a "cat-back" exhaust:

And this is the front section containing the converter:

You can buy a cat-back exhaust that is factory-made for your car, and have its flange bolted to the flange of the front section. Or you can buy a separate Magnaflow muffler and have a muffler shop cut off the old muffler and make up (bend) some piping to weld the Magnaflow onto the remains of your OEM cat-back.

In my opinion, the Magnaflow will be loud, and the work likely to be crude and cost almost as much a factory-made cat-back.
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