No Cat... is this safe ?

[mr_240sx]

Originally Posted by kingsol

if you have no cat and nothing replacing it, you're running an open header, which means the rest of your piping, supposedly after the cat, is useless. i've driven to the exhaust shop once with an open header... it really is super hekka duper loud.

well where the cat used to be, i welded in a 3inch pipe so its pretty much a 3inch straight pipe!