calculating MPG from OBD-II readins
In a seperate thread (started in 2006 so I started a new one as the other is probably ignored by now: http://www.mp3car.com/engine-managem...from-obd2.html) I read the following:
MPG = (14.7 * 6.17 * 454 * VSS * 0.621371) / (3600 * MAF / 100)
MPG = 710.7 * VSS / MAF
What I now wonder is: is this calculation for MPG for the average VSS and MAF in an hour?
E.g. if I have the average MAF value for 12.8 seconds and average VSS in that interval as well, should I then use:
MPG = (14.7 * 6.17 * 454 * VSS * 0.621371) / (12.8 * MAF / 100)