Originally Posted by gotsand?
I was looking at that earlier when I was putting in the new batteries....it doesnt look like it has the "flattened" down pipe from the turbo like the exhaust listing says it does.
will I gain anything by just replacing the muffler and cat with a straight pipe? other than sound obviously...
I would think that it would be less restrictive therefore better flow, lower EGT's more power and better economy.
(these are the reasons for wanting to go 4" anyhow)
:miff: stupid learning curve
Thats what its all about reducing backpressure to get rid of spent exhaust gas. From everything I have read on thedieselgarage, cumminsforum, comp diesel everyone seems to say that straight piping is all you need to do.