building custom exhaust

Merz · #1 08-07-2006, 02:33 PM

Im planning on building a custom exhaust and am thinking of attempting to do it myself. I have a welder and pipe bender, but not a lot of experience with either. I am somewhat mechanically inclined. So i guess the question is, is this something i can do?

The system will consist of:

high flow 2 into 1 magnaflow cat
2.5 inch pipe
magnaflow 1 into 2 muffler.

If i cut off the old cat, will i be able to just weld the new one in place? or will i have to bend new pipes from the headers?

The muffler is 2.5 in, 2.25 out. Will i be able to attach the stock tips to the 2.25 inch pipe?

Thanks

Yoda3000 · #2 08-07-2006, 03:22 PM

I've been considering doing an exhaust too. I'm no expert either, but I'll look forward to see what these other guys say and how it turns out.

Nice job using the stock tips, I don't think there are any better.

Merz · #3 08-07-2006, 03:38 PM

Yea i like the stock tips. and i already have them, so i cant really justify buying new ones. Unless of course the stock ones wont work.

I will post pictures and sound clips when im finished, If i decide to go through with it.

19svx94 · #4 08-12-2006, 04:15 AM

if flow has anything to do with your plans for exhaust, or at least anything you care about, you have to either modify the stock tips or get new ones, there are tiny pipes going into the tips, i am a huge fan of the stock look and since i didnt want to contradict my 3in catback with tiny tips, i came up with the genius idea of just painting some mild looking tips black with high temp header paint, the stuff is good up to 1200 degrees or something which will never be reached all the way at the tips, and i have never had anyone take a second look at the tips being anything other than stock, until i start the car

black beast · #5 08-13-2006, 05:22 PM

The exhaust I had built for me, (sorry I can't build stuff) replaces the third cat, with a high flowing one, I have 3in, all the way from the headers and a flex joint right after the big cat, all custom bent, and a smaller muffler (diamiter) as the right hand side of the dual exit was a really sharp bend, so now it is a smother turn. It is again a three inch all the way back and very free flowing.
It sounds great.
I will have my buddy give me the pics he took when he built it.

Merz · #6 08-13-2006, 07:55 PM

pics would be nice.

If i cant use the stock tips, i will probably just not have tips for a while, or until i find some cheap ones that i like.

So, does anyone know if i can just cut the old cat out and weld the new one in? Or do i have to bend new pipes from the headers?

Also, should i get rid of the primary cats while im at it? What affect would it have on performance?