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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No! They are designed to absorb movement in the pipes as the engine moves during accel/decel. Without movement, you can wind up with catalysts that pop their welds. Ask me how I know.