Joined
·
75 Posts
Is it worth it to go from 4" to 5" exhaust? Don't want to waist money if it's not. Thanks
5" exhaust
-
It's time to cast your vote for March's Cummins of the Month!
1 - 20 of 45 Posts
Joined
·
75 Posts
Yes I searched. Didn't see anything about it.
Joined
·
1,460 Posts
Performance wise it won't do anything unless you are running 800+ hp. All you will gain is a deeper sound.
Joined
·
75 Posts
Ok thanks. I'm no where near that. I like what it sounds like now, so I'll just save my money for other stuff and if I get there I'll go bigger.
Joined
·
12,330 Posts
Any documentation on this?
Joined
·
1,460 Posts
It shouldn't hurt performance. Diesels need very little back pressure compared to a gasoline powered engine. The turbo and bends in the exhaust will provide adequate back pressure.
Joined
·
9,193 Posts
Sorry but no it will not. Absolutely impossible. the exhaust manifold as well as turbo size dictate the max amount of flow from the exhaust system. There is absolutely zero change from stock size to any huge size you can buy unless your turbo and manifold can flow that amount. The stock system can actually flow a max of 4", but does not truly benefit from it for most applications. But however you can easily run a 5" pipe with stock everything else and not change anything whatsoever then what you had from the stock system. However if you have a different sized turbo and if you reach the point of a higher flowing manifold then exhaust sizes other than stock will dictate performance gains. Larger will NOT hurt in any way other than being overkill for the application. And if you still say it will then I would very much be interested in reading your scientific linked articles that actual users have researched. I am merely talking the physics behind it and not scientific background, and if anybody wants to refute the physics then I need scientific based evidence.
Joined
·
149 Posts
I've heard it will and it wont hurt performance. I couldn't understand how it would hurt performance, but your certainly not gaining any after 4". I run 4" tbe to a 5" tip and I love the way it sounds. anything bigger and your gonna sound like a pete coming down the road....which isn't always bad lol
Joined
·
12,330 Posts
Joined
·
556 Posts
I upgraded in my ol 12v, mainly because the 4" i had on it was rotting away and so I wanted to try the 5". Saw no difference other than the sound....looove the sound.
Joined
·
97 Posts
I love my 5" Diamond eye and it was maybe $100 then the 4" kit. I upgraded from the stock system that I had running to a 6" stack. Sound was way better and definitely a great step up. Plus no soot in the bed! If I'm going to do it I don't want to do it twice so I went big with the 5". Just my $.02
Joined
·
97 Posts
Yes indeed! When she goes into lock up she sounds like like a dump truck! (In a good way!)
Joined
·
97 Posts
Same price as my 5"!
1 - 20 of 45 Posts
