Originally Posted by BlackGMC

The sensors are changeable, as a matter of fact I have an extra one just in case. Another thing I noticed with mine is it would read a less than what the scanner was showing... Usually .2 less, it was frustrating getting it working correctly, but after reading on EFI and HPT forums, alot of guys fixed it by running a ground into the Scanning cable and a Ground connected to the battery. Mine seems to be working now...