Ya, I'm still lost on this. I've been running 93 as well since I didn't know any better. I've swapped basically every sensor from motor to motor one at a time checking the problem even the coil and ECM. Let me know what you found. Even took it to a dealer and they can't figure it out.

it will be figured out by spring cause I lost all compression on #7 last weekend and #3 is down to 125# so its getting rebuilt this winter.