ALLSTATE
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I just bought a 2003 mack granite with only 120k on it has a ai400 motor. i have power the lightning bolt came on now its out no codes no light now. boost was only 22lbs then under load the boost falls off i had it scanned no coeds
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POWER LAG ON 2003 E7-400
in Engine and Transmission
Posted
I have a 2003 cv713 granite with 120k original miles. I only had this truck for a month and I can’t stand how bad the low end power is. I just installed a module from ag solutions and it helped with mid range power and top end. Fully loaded 78k it will run 75 up amd down hills no problem. But taking off it is so bad till about 1600 rpm I need to do something about this any help would be great.