Finally, 45 MPG!

[talnlnky]

Originally Posted by detroiter

I don't have a scanguage or anything but the mpg difference between going 60mph and 70mph seems pretty big. can anyone supply some information in the mpg gain between doing 60 instead of 70?

there are tons of factors when going that speed. Drifting behind a semi I can get very high numbers, even when doing 70.

You can expect to see around 5-10MPG difference on average between the two speeds... especially if you don't try the "Hangtime" skill... Tho hangtime I think has been exaggerated, it does help. I don't think it really has anything to do with ECU maps or whatever, but rather physics of energy & torque required to speed up versus energy/torque required to maintain speed.

There are some times I notice that going slower makes it harder to get good mpg's than slightly faster... for example... I find it easier to get good numbers going around 60mph than 55mph on the highway I use to go home. Regardless of of fast I go I seem to use the same throttle possition after I get up to speed and back off on the trottle a bit. So really, the slower speed, but same usage of gas means I get lower mpg at 55. That doesn't appear to be true on all roads/highways tho.

Still haven't gotten to 45 yet. I lowered my tires back down to 40psi... so I don't know if i'll see it ever. 43's seem to be what I see. I had one 250+ mile trip that I got almost 48mpg on, But not for a full tank.