Making Test Pipe...Suggestions??
I have a JDM b16a and just wondering how big pipe i should make a test pipe out of....my cat is already gutted, just want something with better flow...
go ahead and get a couple new exhaust donuts and some high temp sealant because more than likely its gonna leak. and it sounds horrible. my prelude's test pipe leaks and i've shimmed it with 3 exhaust donuts. not worth it in my opinion.
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