Exhaust Size recommendations for a Cosworth
What would be a good size exhaust on a 1976 Cosworth ? I plan on removing the catalytic converter and put a high flow muffler. Is 2" a good size for this 4 cylinder? or 2 1/4 or 2 1/2?
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I recently had a 2-1/2" complete system built at a custom muffler shop. Used an end from an old header to mate to the header and product a dual crossover pipe that flows into a 2-1/2" pipe to a single inlet-dual outlet 2 1/2" Magnaflow. He then made dual 2 1/2" twin tail pipes out of the muffler. I really love the sound of it.