Quote:
Originally Posted by Hooy
Did you really use all 17 gallons of gas in one day?!
Fill with 93 oct for a month and see if it improves. The lower grade of fuel can only hurt, and less than $5 a tank is a good investment in your BMW
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Somebody with headers has to chime in.....something has gone a rye. I can't see just headers killing mpg that bad.