Quoted:
I have a rebel, couple thoughts on getting better mileage:
1) you can actually calibrate the throttle response
2) If you're doing 15mpg on the regular, it means the MDS isn't kicking on (It isn't switching from 8 to 4 cylinders when highway cruising lazily).
3) Are you in aero mode or did you disable it, be honest brother
Are your tires at proper PSI? I know when I got KO2s, they were a little bit sensitive to that. They had a shit ton of traction, and my non-expert theory on that is as you air those badboys down, the traction comes up but so does the rolling resistance and how hard the engine has to work to turn them.
4) Lastly, I shit you not, let off the gas for a brief moment after getting up to speed.
When you get a moment on a highway that's pretty empty, and if you can do so safely of course - Flip over to the screen where it shows you your fuel efficiency.
As you're going up a bit of a hill on the highway you'll probably be getting 15mpg at 70ish
Once you're at the hills top, and you're at speed, let off the gas a moment
When you do that, you signal to the MDS that it's okay to flip to 4 cylinders.
It should spring to about 20-22mpg when it does this, depending on a few things.
If you're doing 85, and passing people constantly, man, I mean
Once it goes from 15ish to that low 20s bracket, you've got it down pat.
Note: and it will do this on 40mpg roads that are nice lazy straightaways, free of stopsigns. If anything I do see higher than 20s.
Jackrabbit starts? The Hemi is thirsty