So I ran my EZ on level 4 with about 7klbs in tow from Phx to Flagstaff - (always ran on level 2). I have tons of power (" I go as fast as the guy towing in front of me") but coming back I had to limit my speed up the big hill due to EGT's. I held at 1150-1200 but need to get another 5-10mph out of her to keep up with left-lane traffic -I'm running a drop in AFE. Should I go after intake or muffler to drop temps down? Need another 50 degrees or so less at 3k to be comfortable. I don't want it louder, just cooler (and not spend a lot of $)