which can be very damaging to indoor plumbing. It wouldn't matter if there are enough rich injections to balance out the lean injections... the lean injections could still put that individual cylinder at detonation risk. I have no idea of the spread, but say you were running on the edge 12:1 and the spread was +/- 1 you'd be in a bad spot. Conceptually, it seems like a legitimate risk factor we just need to quantify it. Until then, I would err on the side of caution.