If running a Hurricane kit or any other with PCV you could get the Ignition module and have two maps like I do for my NA. One is 87 and other is 93 Premium fuel. Is nice for long rides where you aren't racing and just riding. Can fill up cheap!What if you can't find 91 octane fuel in a remote area, do these kits have some type of adjustment to account for that or do you need to carry octane boost just in case. Does that even work?
I was told as long as you don't hold it to the bar, it's OK to run 87, or no more a mile long pull, if it was me I would just carry some torco race gas concentrate, that stuff works great.