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Isn't there an inverse relationship between exhaust backpressure and torque? I always thought that more backpressure (up to a point) increases low end torque. I used to own a car that had exhaust bypass valves. Owners would rig them to stay open all the time to have more sound. The net result was a drop in torque initially.
Curious how that relates to headers and exhaust on the 86.
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My 2013 Firestorm Red 13 FRS is gone. Bought the next best thing: 2017 Alfa Romeo 4C
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