down pipe

hey guys, i have been looking at a new downpipe. preferably 3.5 inch. i have a stock downpipe but 4" straight pip from there back. i had my eyes set on an aluminized mbrp one for 130 bucks from xdp. but i just stumbled across a diamond eye one from summit that claims to be stainless for 50...

I bought a 3" down pipe from diamond eye for my 1997 powerstroke. I'm tryin to get the old pipe out and haven't had ANY luck. I've read that I'm supposed to cut the pinch weld and beat the firewall back, but what is the pinch weld and where is it?! Please help!!! Thanks

I just purchased a diamond eye turbo back exh. and have some new exhaust header wrap laying around,Does It make any diffrence at all if i wrap the down pipe? the reason why i asked is cause someone told me not to because when ever it gets wet it will stay wet and eventually begin to rot the down...

i know, i know. another down pipe question, how many time do we need to beat this to death. im sorry. i know the prefered method is to get a 2 piece cause its so much easier to install but i would prefer one less clamped connection and one less place to leak in the future. so..... who on here...

I just got my first power stroke and its a 96 7.3. i want to do an oversized turbo back exhaust but im not sure on how big my down pipe can go without moving my firewall back. if anyone has any information on this it would be a great help.