just like mdpsEG said...I have a b16 sir2, does the same thing, 65-70? Here is an idea...take it down to 55-60 for normal driving that will take ya back to 3-3500, unless you do tranny work, or get a diff. tranny you'll have to give up something, I have been getting 25 mpg these first few weeks but I have basically been driving like you 65-70 if not more, and getting there quite fast so...while your driving around normally, don't drive like your at the track and that will save you some $$$