Exhaust related question..
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'87 TII rx7
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Exhaust related question..
ok so i have an rb header running to the main cat and then the pipes leading to the tips. since the precats have been removed i wanted to take out the main cat and put a straight pipe, but was told it would be to loud. so im thinking of getting a silencer to replace the main cat. my question is would exhaust flow be improved without the cat and replacing with a silencer or a straight pipe.. pretty much im trying to improve exhaust flow
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