We always considered the factory exhaust system fitted to Mopar musclecars as good. As factory systems of the era go, the OE Mopar exhaust was generally the best. Mopar iron manifolds were typically ...
The premise of the test was simple. First we'd select a test vehicle, then run all the mufflers on the chassis dyno to determine the horsepower output and back pressure of each set, and then test them ...
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