Quote:
Originally Posted by m4a1mustang
The flex joints really just allow for greater manufacturing tolerances. It ensures that every exhaust system will bolt right up and there'll be no need for adjustment which can be very costly on the assembly line.
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Thanks. I figured that was one of the possibilities, but since I never saw anything like it in a factory exhaust system before I though it might be something special about these engines. I guess the relatively low volume aftermarket companies just count on making theirs more perfectly. Most people seem happy with the fit of their aftermarket systems, other than the earlier ones when they first came out.