Also, if this (below) is true, there must be something my ECM doesn’t like at 1000-1400 rpm, because it just doesn’t react to throttle, until one-Missouri-two-Missouri, then violent 3-gearNote, the only risk to the engine is at load and low RPM, being at low load and low rpm is perfectly fine.
Although, I believe this:...Even at 1000 RPM it has 260 ft lbs which is the same as the peak torque of the 3.7 at 4,250 rpm.
According to the BEMM at 2000 rpm: 150 HP, 380 ft lbs, which is more torque than the diesel or 3.7 at any speed.
The ecoboost is a torque monster at any speed which makes it tempting to operate it at very low rpm in an effort to get better fuel economy by the user and the manufacturer to meet government requirements.
is being in-boost better or worse for mpg, all else being equal? Any chance going slightly faster to get into boost, vs in vacuum-mode would actually increase mpg?My 245/75 tires result in almost a 10% differential, so if the odometer says 268 miles, you need to multiply by 1.10. You actually went about 295 miles, that is the figure you need to use when calculating mpg.
Also, at 65-70mph the wind resistance becomes a big factor resulting in lower mpg and even more so the faster you go.
Here's a recent comparison in a MR EcoBoost/3.31 axle with 245/75 tires, note that the turbos are not boosting at 70, but are at 80:
View attachment 130890 View attachment 130892
Is this what you mean?...Any chance going slightly faster to get into boost, vs in vacuum-mode would actually increase mpg?...
I guess my question above was pretty naive. However, let’s say speed is constant, but you downshift to 5th, downshift again into 4th. So RPMs go up, but does boost therefore kick in? Let’s take 60mph, in 4th, 5th, and 6th, but in a couple different scenarios.is being in-boost better or worse for mpg, all else being equal? Any chance going slightly faster to get into boost, vs in vacuum-mode would actually increase mpg?
One of these days I will learn enough to get a torque-pro or equivalent, and use it.
Sent from my iPad using Tapatalk