Elwood2020

Thanks Mack technician. This is why I’m asking before I blow this thing up. I’ll check the pressures and verify I don’t have leaks and flash the ecm to 460. If you could let me know about the injectors and turbo that would be much appreciated!

I have a 2003 ch613 with a e7-427 engine. Heavy haul ( double frame ) 4.42 gears, lift axle, 13 speed Eaton. I recently bought the truck and overhauled it. It runs good , smooth , but it’s a slug with 80k on my lowboy. Has anyone done the rochester diesel upgrades? they suggest stage 2 injectors, manifold and turbo. Claiming 550hp range. ??? Before I spend the coin I was looking for some more feedback from other driver. 2 tuners and rochester diesel said to leave the ecm alone. Any other options or suggestions would be greatly appreciated! thanks.