Quote:
Originally Posted by nash
I'm curious as to what engine RPMs you folks are seeing with your ScanGauge. Pretty much anything of note you feel like posting, such as warm idle, cold idle (Stage 1), cruising at various speeds, freeway 5%, 6% grades at various speeds, passing RPMs (say 30 to 50, or 60 to 80mph)
I'm sure others would be interested in knowing too. Thank you in advance!
|
I drive to reduce RPM on my 32 mile commute. I use 50 miles per hour as a target cruise in the winter with Primacy snow tires on, and 55 MPH in summer with the Energy tires. Tires are at 38 PSI in Winter and 40 PSI in summer.
Right now, in winter configuration at 50 miles per hour, I see an ICE RPM of from 1450 up to 1650 on level pavement in good condition when everything is stable and the ratio has backed off as much as I can make it do, ICE RPM will be somewhat higher if traffic conditions demand it or on a hill. I drive to keep the MPG indication under or about 40 MPG as much as possible. I figure that RPM gives me a shade under (-)1400 on MG1. The car is very quiet and smooth when I am in this condition. This does not include snow days or days when traffic prevents reaching 50 MPH. On those days, mileage suffers accordingly.
Last summer at 55, I was getting an ICE RPM range from slightly over 1580 up to about 1700 depending on weather and conditions. Target mileage in this configuration is 45 MPG, with the same limitations as above. That runs MG-1 at about the same speed, so I think the ECU must like the MG-1 RPM range or some other condition that puts it around 14 or 15 hundred. Again, this is when the car goes "quiet" like has often been discussed on this forum.
These seem to be minimum sustaining values. I usually cannot get below them unless its a small downhill or I accept a decelerating coast.