I'm looking at buying an XR6T as a daily but with the price of fuel sky rocketing, I'm wondering whether it's at all possible to run a setup where you can simulate the conditions of an N/A Barra running on 91 octane fuel? Then by using a duel map setup could you program the ecu to run an extremely fuel efficient 91 tune on very low boost but then also have a 98 tune built in running stock power & stock boost? I know 91 octane fuel should never be the fuel of choice for a turbo set up but these are hard times.
