i took off my buddies six-gun off his 02' lb7 and loaded neens econ tune, same op system, and the truck thinks its -40 deg coolant all the time, and the scans say the same thing, it revs at startup and idles rough. of coarse it runs like crap because all the tables that follow coolant temp. i even loaded the stock tune into the truck with the banks unhooked and it still read -40 on the scan and on the guage and ran like crap. what could be the problem guys. as soon as i hook up the banks the truck runs great. i feel bad because he paid $100 for a license and i cant for the life of me get it to work. and this is not the first truck i have tuned.