i was pulling a hill 5-7% grade for about 5 miles and my gross weight was about 11,500 pounds and my egts were about 1150 and my temp was getting hot i was at the L on the normal on the temp gauge and i was about 45 mph. i still had alot of pedal left... is this normal or is there any way to cool it down or what... i have the ats down pipe 3" straight pipe and a cold air intake and a new 4 row radiator... anything i can do let me know... thanks