4 inch exhaust

[ted_ex]

So I work at Napa and Since I never do any actual work I was looking at a diesel truck exhaust catalog and I realized I can get 4 inch mandrel bent tubing for pretty f-ing cheap. I figured with my little discount I can make a 4 inch exhaust for like 60 bucks. Do I need a 4 inch exhaust? Hell no, but it would be cool. I'm gonna buy the piping next week and I'll post pictures of the process. Maybe I'll post a writeup with part numbers and everything. I could also do 5 inch but I think that's a little overboard (like 4 isn't).

tedX

[gthompson97]

what kind of car is it? make sure you don't run into problems with exhaust velocity (what most people refer to as backpressure) with a piping that big.

[ted_ex]

The car is a 95 GS-T, I'm gonna make one for my 240 too when my eclipse stops stealing all my money and I can put an sr20 in it.

tedX

[EclipseRST]

I have 4" piping on my spyder... Looks fuckin nice and should flow decent too!

[Urban_Squrill]

That would be sweet. Are you going to make it turbo back or back-cat?

[ted_ex]

I'm gonna do a turbo back. I'll have to get a reducer for the o2 housing and I'll just do a dump for the wastegate. I've got the turbo flanges so I'll just cut an adapter up and make it go from 2.5 to 4 before the first bend. And as for the cat....the environment can kiss my ass.


tedX

[JoeWagon]

Have fun. Know that 4'' inlet mufflers are going to be more expensive, but maybe you can get a discount on that too. I don't think I need to mention anything about how a 3'' is capable of running faster than you need.