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Mountain west truck is my only option for local help in Utah that I know of and they claim that the 460 upgrade is different than the 455 program. I have the fuel return on the side of the block and non waste gate turbo. I was also told IF Mack approves the upgrade I might have to change turbo and injectors. My confidence in mountain west is slim due to them screwing up my truck when they did the overhead now it does not hold as good and I lost one full gear on the hills.

I was looking for input on the ECM upgrade from Mack on my e-7 427. Mountain west truck in salt lake city claims that Mack can upgrade you from 427 to 455 has anyone done this, and does it work

need some help slc mack is lost on what to do picked up new sender put in tank hooked up according to instructions included did not work kicked on lightning bolt / engine light called mack they said switch wires if it dont work then not sure why any ideas would be great. put old unit back in no lightning bolt and guage still only reads from half to empty

try tramcor in farr west ut they do a fair amount of specialized stuff like what your looking for

does anyone know if a pyro and boost guage can be installed with the other factory guages my truck does not have the full guage set or am i limited to old school mechanical style

well here it is parked next to my 9200 was disapointed to find out when i got to the truck that it has a e7-427 instead of a 460 but not the end of the world everything else checked out so now its mine drove it back to utah and cant wait to put it to work.

thank you for your input i have a apointment with the mack dealer in kc when i get there for ecm varifications and oil sample reports will check wire harnes.im in northern utah so my local mack dealer is mountain west truck in slc. any idea on what to expect for mpg its a 460 with 3.73 and a 10 spd

howdy new to the site think its great i grew up driving macks from about ten years old and have been in a international for the last 13 years and i fly out to kansas city mo tues to possibly pick up my next mack a 2001 cx613 wondering things to look for such as the expantion tank from plastic to metal any other advice would be appreciated. it has a non wastegated turbo on 460 with a ten spd