Looking for a few thoughts on what I should do next I have a 99 3/4 ton Cummins with 315k on it. What I have on it already is 4" exhaust, home made intake and intake horn, fass platinum 150, built trans and rear end, and 50 horse injectors. Im looking to make a bit more power for towing and better milage. Just not a fan of tuners thanks in advance,

 

Looks like you got most of it covered. If you don't want a tuner, don't know how to benefit without changing turbo and what nots. Edge makes an EZ the price isn't bad I think about $400. And there are a few venders online that are having sales right now. But a tuner would really wake your rig up. But I give that as food for thought.

 

Thanks ghostman any thoughts on a little better turbo I'm also planning on doing exhaust manifold next month since mines been cracked cracked and welded but I've been reading that the three piece ones are starting to leak.

 

What do you have on it right now? HX or HY?

 

Should be a hy being an auto but forgot how to check

 

With it being an AUTO yours is most likely the HY35. Simple cheap upgrade would be to go with the HX35. But If you called around to vendors and told them where you wanted to be they could find one to meet you wants/needs. I also have an Auto, but I have the HX35 turbo. I like it pretty well. Guess it was like a secret gift from the previous owner.

 

Alright thanks again senior