Quote:
Originally Posted by OutlawDrifter
great thread! your first tpi setup brought me here, then i ended up having to read through everything!
16.5mpg seems low with that tuned port setup. maybe i missed it, but what gearing do you have in the rearend? when my 1991 z28 was still L98 tpi powered, it would easily pull down 25-27mpg on the highway with a 3.23 gear and 25.7" tire.
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Thanks OD,
The fuel trims have been seriously dialed in by Double E. Could probably lean out cruise fuel, but not a good idea running cats. The rear is a 3.73 and the rear tire height a shade less than 30". But probably the biggest factor holding milage back now is this thing has the aero of a brick, no wait, a brick may have better aero. lol And then theirs the rolling resistance and it weighs more than a Camaro.
Would I like to break into the 20's? Yes I would, but moving from 10mpg to 16.5mpg is a big improvement in my wallet.
