Originally Posted by msantos
The IGN readout is most helpful when trying to lock in a good MPG at speeds above 45 MPH. Essentially you gently stabilize your speed first (no cruise control), then while keeping the speed and RPM steady you wait a bit until the SoC jumps to 7 bars. Once there, you will look at the IGN value and adjust the accelerator pedal pressure until is reads between 29 and 36. The point is to let the speeds vary as the terrain changes by watching the IGN and keeping it in the range.
thanks, I"ll have to try it. Unfortunately most of my driving does not involve long stretches above 45 mph, except on our hilly freeways-- but I'll give it a go.
As a follow up, question, awhile ago there was some discussion of monitoring TPS along with IGN and LOD-- do you find TPS is helpful? I've periodically tried using it but didn't find it particularly helpful-- seems like it simply confirmed my own sense of pressure on the accelerator.