3406E Turbo and Tuning Upgrades

You’ll be ok I pull a flat pretty much grossing 75-80k daily. I put the 1.45ar exhaust housing on mine tho. I have the smaller exhaust housing still but I took it off because my truck was burying the boost gauge and blew my head gasket. Now since I put the 1.45 on the turbo slowed down some, and I also had surging with the smaller housing, the big housing fixed this issue. Truck runs great and I’m averaging about 6.1 at 70mph with as little as possible deadhead miles so mainly always heavy. If you can control your right foot the truck, and you will appreciate the more power.

 

Yah that sounds about right lol, whole lotta money there though.

 

so i just ordered 78mm 1.32, I'm running the stock 550 tune and running 80-90k gross in the mountain west. should have i went with the 1.45? i figured I'd be alright with the stock 550 file, but now I'm nervous

 

you will be just fine. High altitude needs the smaller exhaust housing

 

thanks. i am on my second load since install. grossed out just over 90k she's picked up 5 lbs of boost and running around 875 max egt. I'm happy with the results and will be putting a ported manifold and blanket next month sometime.