Not the get valve. I meant EGR valve. Spell check messed me up there.
Could be the get valve, could be any number of different sensors in the air compression/intake cycle. Could be air to air. Seriously, get a hold...
I had the same issue. Engine sputtering in high gears while going up hills, no power, black smoke, terrible mpg, etcetcetc. Get ahold of...
Check fuel filter. If that ain't the problem, get ahold of rebel127 here at truckersreport. Dude tuned my ecm. I gained .5-.75mpg and my truck...