I think I had 140/145 in an attempt to gain better mileage, but found myself constantly having to dip into the secondary cause it wouldn't get out of it's own way, and was burning through gas quickly. Went back to 150/155 or 155/160 and it has more balls now, but I've only gone through one tank and can't afford to top it off yet to figure my mileage. Kinda hard to figure out for sure though since my tires are 6" taller than stock and I have a slightly taller rear ratio than stock too
