stock downpipe
Thread Starter
TECH Fanatic
Joined: Oct 2003
Posts: 1,101
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stock downpipe what size is it and the cat? are they 2.5? or are they a little smaller or bigger?
getting ready to put my 3 inch exhaust on and i have a couple 2.5 inch high flow cats that i have left over from my camaro. was thinking about cutting the stock downpipe infront of the cat and replacing it with one.
getting ready to put my 3 inch exhaust on and i have a couple 2.5 inch high flow cats that i have left over from my camaro. was thinking about cutting the stock downpipe infront of the cat and replacing it with one.
On The Tree
Joined: Aug 2013
Posts: 157
Likes: 1
It's slightly bigger than 2.5. I bought 2 of a 2.5" test pipe 18" long at auto zone and made them work because their ends open up a bit. I deleted my cat, u bend and o2. And reused the stock rear flange, it was actually easy just took me some time..
