Here in Wisconsin they plug into the OBDII port and check the history and see if any codes are in it. No codes and you pass.
On E85 u can use a ton of timing could get near 680...low timing makes sense if u are worried about gas mixes..16-17* would be plenty safe though....carry the torco like u suggested for safety, can't hurt.:beer:
It looks so out of place on the dirty tank.
Just a thought, buuutttt you could have cleaned the tank ahahahaha.