At traveling Freightliner seminar, I learned that the fan on the C7,s take 20HP just to turn them. So it seems to me on my 330HP, I have only 310 hp at the wheels. I have a ScanGauge D but I have not toggled thru the HP range, I'll try that next time I'm out. The four displays I use for default view is TEMP, SPEED, MPH and TFT(tranny fluid temp). Since it sits on top of my dash, it's much quicker to view that at a glance than scanning my eyes down to the dash to three separate gauges. I don't have a TFT gauge on the dash, so its nice to have that on the Scan Gauge.
Barry & Sue Miller("extended" RVer's, 6 mos + per/year) combined trips.
04 Journey 39K, C-7, 330 hp, towing:19 GMC Canyon 4WD or 2013 Ford Edge AWD, Aero 5050XL, ReadyBrake.