Quote:
Originally Posted by codyace
My car has gotten 30-32mpg countless times with the 4.6 final drive, when cruising at 60-70mph highway only. I don't speed much as the mpg is worth the difference. To me going 80mph isn't worth the saved nor gas time vs goign 70mph. I mean At that rate you're only really gaining 2-5 miles per hour gained, including cost.
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That's actually kinda funny. I get the best MPG doing 75 or so (no joke), the best mileage I ever got on my car was a trip from Utah to Wyoming. I think I averaged about 80mph, and even a short stinted sprint with a Jag. I got over 30mpg, and that was with a 1/4 tank of in town driving.
For some reason the engine feels like it tightens up at 3500 (or whatever I'm doing at 75-80mph), The engine noise is less, it's smoother, and I really do get better mileage. Stock cams for right now, 550cc injectors, and basic tune,, yadda yadda. No don't have a GT2871, just a GT2860R, though upgrading it to a GTX2867 either this summer or when I finally get done overseas.