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I have a 2002 1500, 5.9L. I've been looking at that Superchips and Hypertech computers. Do they help? Do you have to run 91+ octane to see a difference? Any experience out there?
Thanks. I am pretty leary of those things but what I saw from Superchips, they offer a 30-day guarantee. I just hate putting out $400 and then fighting for my money back if it does nothing or only works if I spend another 10 or 20 cents a gallon for the "right" gas.
umm....pay with a credit card, and if it doesnt work, and they wont give your money back, call your credit card company and put a stop payment on it,...