- Oct 30, 2002
- Great Lakes
What vehicle/engine are we talking about here? Just have the computer tuned to 91. I don't see how running 93 in it would hurt anything.
Originally Posted By: pacem
The problem with that is there are vast areas that don't have higher than 91 Octane, CA or AZ being prime examples, or Nebraska. Plus some mountain states where "Regular" is 85 Octane. Then I would have to reflash my PCM. What happens if your PCM person is unavailable? DIY?