I doubt the tuning devices are the cause. Codes indicate low and high system voltages detected within a 4 second time frame more or less. Could be voltage regulator most likely. Rule out battery health and all connections to battery as well as all grounds first. Test charging output to be within 13.8-14.2 and stable. Sounds like charging is weak and battery sometimes drains to low voltage and the high voltages are from the spikes from the voltage regulator. Not sure if the battery itself will cause this or the stator as the problem, however, loose terminals or bad grounds might. Process of elimination.I have a 2008 NRS that I installed a pcv and autotuner. The bike now pops codes P0562 and P0563 on start up. Has anyone else had this issue?