So after I replaced the short block with the MPR built one I was actually able to crank the car on the 1st Lund tune. I had NO check engine light at that time. I attempted to do a crank relearn as basically every rotating part from the balancer to the clutch had been replaced. Using the N gauge I attempted a crank relearn. It failed and set the check engine light. I checked the code and it is related to the crank. Also could not clear the code. Speaking with Lunds tuner, I was told to wait until we made some pulls and try again after the tune is dialed in. I am now on the last 93 octane tune and the crank relearn failed again. Does anyone have any tips on using the n gauge crank relearn function? Anyone had issues? Thanks in advance, Ken