unplug the MPI controller and put it back to stock you will see your 15+ low to 95+ wot ,it will show these low readings with the other controller hooked up and you can't clear any codes with mpi controller hooked up,it has to be stock,but any ways your gonna see code 15 all the time and it will go away but if you release the throttle from a wot romp fast the tors will kick in, so jump out the tors and it will show 15 when you turn on the key but will go away and run ok and wont die after quick throttle releases.