i have a 93 civic with a stock b20 (advanced timing) with DC headers and stock exhaust...the car has no cat. it is extremely loud and winny...what can i do to make it quiet??? bigger pipping??? different muffler??? put a cat. on it???
all of the above... 2.5 inch pipe, flowmaster muffs, eh. forget the cat... it's useless and robs power. also the use of a resonator would be a good idea. tyr these and it will be CONSIDERABLY quieter.
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