Old Tele man -
That sucks. Last year I was doing some data logging with a different OBDII gizmo, and I got pretty regular data :
Code:
MPH RPM/1000 RPM
57 1.92 1921
57 1.97 1971
57 1.97 1973
57 1.97 1973
57 1.97 1973
57 1.97 1973
57 1.99 1990
57 1.99 1990
57 1.99 1990
57 1.99 1990
57 1.99 1990
57 1.99 1994
57 1.99 1994
57 1.99 1994
57 1.99 1994
57 1.99 1994
57 1.99 1994
57 2.00 1996
57 2.00 1996
57 2.00 1996
57 2.00 1996
57 2.00 1996
57 2.00 1998
57 2.00 1998
57 2.00 1998
57 2.00 1998
57 2.00 1998
57 2.00 2002
57 2.00 2002
57 2.00 2002
57 2.00 2002
57 2.00 2002
57 2.00 2004
57 2.00 2004
57 2.00 2004
57 2.00 2004
57 2.01 2010
57 2.01 2010
57 2.01 2010
57 2.01 2010
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.01 2012
57 2.03 2031
57 2.03 2031
57 2.03 2031
57 2.03 2031
57 2.03 2033
57 2.03 2033
57 2.03 2033
57 2.03 2033
57 2.03 2033
57 2.04 2037
57 2.04 2037
57 2.04 2037
57 2.04 2037
57 2.04 2037
57 2.04 2041
57 2.04 2041
57 2.04 2041
57 2.04 2041
57 2.05 2048
57 2.05 2048
57 2.05 2048
57 2.05 2048
57 2.05 2050
57 2.05 2050
57 2.05 2050
57 2.05 2052
57 2.05 2052
57 2.05 2052
57 2.05 2052
57 2.05 2052
57 2.05 2054
57 2.05 2054
57 2.05 2054
57 2.05 2054
57 2.05 2054
57 2.06 2058
57 2.06 2058
57 2.06 2058
57 2.06 2058
59 2.05 2050
59 2.06 2060
59 2.06 2060
59 2.06 2060
59 2.09 2086
59 2.09 2086
59 2.09 2086
59 2.09 2086
This data was sampled between 1 and 5 seconds. The sampling depends on how quickly the ECU/PCM returns the request for data. The above boils down to :
Code:
MPH RPM/1000
57 1.92 to 2.06
59 2.05 to 2.09
HOWEVER, the above data was not gathered with an eye on your observation. It's not continuous, I sorted it for you to see.
If I get the chance, I will attempt to replicate your test conditions, albeit at a lower speed, and see what I get.
CarloSW2