I just got a 2006 F350 with a 8/10 in lift, 37 in Procomp Extremes, 4 in Silverline exhaust, Airraid Intake and Edge Attitude. I have a 30' toy hauler (tow trailer) loaded about 11,000 lbs going up the 15 freeway about an 8-10% uphill grade. My temp was up at 230 getting near red and had to slow...