ATS Arch Flow manifold
I've done everything I thought possiable to help my Cummins breath easier. 5" exhaust turbo back, AEM Brute Force intake, SPS 62 Turbo and last but not least ATS Arch Flow manifold. I changed the intake manifold to the ATS Arch Flow manifold a week before I changed the Turbo and put on my ATS exhasut manifold. What I noticed with just changing the intake out was the engine didn't lug anymore. Usually I had to go into second when turning into my neighborhood, I could stay in 3rd after that and make the turn. The boost was a lot smoother. It came on smooth and spiked smooth, it wasn't just whooosh, spike and fall on it's face. It was just flat out smooth. I don't know what year truck you have, but I did have to wiggle some stuff around to make it go in, but it was really no big deal... Is it worth the money, IMO yes it is... Do you "really" need it, probably not, but do we "really" need SMARTY's and TST's and all the other good stuff that out there... :-laf Banks can keep their design... Look at the Arch Flow and then the Banks, which one looks smoother flowing to you?