So I finally installed a TS-Performance 6 position chip and a set of Auto-Meter guages (Boost, EGT, Trans Temp). What a difference. put it on +75 hp empty and romped on it. About tore my head off. Makes a big difference in fuel mileage also. Even when pulling my 9 foot utility trailer loaded with garbage, still maintained 19 to 21 mpg. Going to drag the 5th wheel up the Sierras this weekend to see what difference I have under load. My question is how hot is redline for my truck? 2003 F350 with a 7.3 and auto trans. Everything else is stock.