Quote:
Originally Posted by Joe1234
can't I just use a back-pressure meter and put discs or something in the exhaust to simulate the stock exhaust and cat?
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The idea behind a tuned exhaust is not adding resistance to get the "right" back pressure, because a small exhaust should have very little if any back pressure, so why would a larger exhaust have back pressure when a smaller does not? because the exhaust is moving in pulses and it takes time for each pulse to travel down the exhaust pipe, if you have a larger pipe then it will take longer for that pulse to travel to the end, to large and it will bounce around enough that it will start traveling backwards, causing back pressure, so no, closing up the hole at the end of to large of an exhaust pipe will not help.