Hey all this is @XPLR_DIS … so I had my flywheel upgraded and went to Mexico without doing any revisions or data logs for my tuner. When I came back from the vacation nine days later, a car battery was completely dead. I charge the battery and checked the voltage and it said 12.4 with the car running, I spoke to my tuner in my mechanic and I was told it could possibly be a crank relearn situation because the gears are also very rough, slipping and redlining in first gear as well as in 5/6th. My question is I’m not sure if this is all related to the battery or the flywheel I did perform a crank relearn through VCM scanner. HP tuners myself and I did state that the crank relearn was successful. The car seemed to start perfect the next morning until I try to start it again in the afternoon and it almost felt like the car was Stalling and struggling to start. Not sure if this could also be alternator issue. Has this happened to anyone else?