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OK first things first. What mods are you running that require high octane fuel, first of all? Tune?
Well I have a flashpaq 91 octane tune. and the gas round her is not that good so I started using octane booster. Got the NOS cause it was $15. tried it out and I noticed a big difference! i used it cause with the tune it goes thru gas even more, and it help out on my mileage real good.
Yeah I figured you had a tuner of some type. I know I'm beating the official TYF dead horse by saying this...but sell the flashpaq and get a Black Bear tune. You'll see excellent gains in both power AND fuel economy without having to use that stuff.
I went from a mixed city/hwy average of 13.5 mpg up to an average of about 17 now, thanks to a BBP 91 octane tune and fixing a minor air intake leak. Best I've gotten mixed city/hwy was 18.8, AND thats with my truck being leveled front and rear running 285s. I don't care who you are, a gain of 5.3mpg is ******* awesome. I'm taking a road trip out to CA next week for vacation and I'll be installing an AEM Brute Force before we leave, so I'm looking forward to seeing how much the mileage goes up. I'm really hoping to kiss the 20mpg mark.
We only use Lucas Octane Booster if anything at all...
have you ever tried Zmax??
buying 91 or higher gas octane compared to 87 takes your 5 miles away tho