I know this is the last thing on anybody's mind, but the one time I tried to adjust Electronic Throttle settings, the truck (2012 tahoe) hit REP mode. Dangerously slow! Any issues bumping up the max throttle from 6% to say 20% or so? I notice there is a spark timing map for REP mode also.. I don't intend to ever enter that mode again, but you never know what might happen..