3'' v.s. 4'' Exhaust
#1
3'' v.s. 4'' Exhaust
Just wondering if anyone has any hard facts on going 4'' over the stock 3''. Never really seen a good write up on exhaust...
Also just a good topic to talk about...
Another loop to throw in is deciding on alum or T409...
I dont think T409 is a wise choice for the money, but I live in MO and dont have alot of snow... Alum lasts awhile and is not that expensive from some ppl.
Just wanting some comments for this or for that.....
Also just a good topic to talk about...
Another loop to throw in is deciding on alum or T409...
I dont think T409 is a wise choice for the money, but I live in MO and dont have alot of snow... Alum lasts awhile and is not that expensive from some ppl.
Just wanting some comments for this or for that.....
#2
#4
Think of it this way, your engine is basically an air pump, you are trying to reduce restrictions coming in and going out of the engine. That is why you put on an aftermarket intake and free flowing filter along with intake manifold, among other things. Now the air is flowing a lot better into the engine, now it needs to do the same out of the engine. This keeps the incoming air at maximum efficiency as well as the exhaust flow at maximum efficiency. This is the reason for upgrading exhaust from 3-4". For hard facts go dyno your pickup with stock exhaust on, then replace with a turbo back 4" system and see the numbers rise.
Far as aluminized exhaust if you don't want it to rust paint it with high temp paint.
Far as aluminized exhaust if you don't want it to rust paint it with high temp paint.
Last edited by H.R.D; 07-16-2012 at 06:12 PM.
#8
Far as aluminized exhaust if you don't want it to rust paint it with high temp paint.
I tend to lean away from stainless on a diesel. Stainless is hard, diesels vibrate a lot. Cracks may appear, and welding only makes it worse.
#10