Originally Posted by an8sec70cuda
Not scientific at all, but mine slowed down almost a tenth and 1 mph when I put some 110 in the tank after running low on pump 93.
11:1 572" hemi at 34° running mid 9s at 140 mph. I didn't adjust anything for the fuel change b/c it's a dedicated pump gas motor.

Good to know, I’ll be close to that