data acquisition refresh rate
03-16-2006, 08:42 PM
#1
data acquisition refresh rate
I was playing around with obd-2 data acquisition on a 97 GXE. The refresh rate was slow. It'd take over a minute for each sensor to refresh. For example, I'd be idling and it would show 650 rpm. I'd hafta hold the accellerator for over a minute before the data acquisition registered 2000 rpm.
Is the slow refresh rate normal? When the unit was plugged into a 2000 SE, the refresh was very fast, quicker than once a second. What gives with the difference?
Jae
Is the slow refresh rate normal? When the unit was plugged into a 2000 SE, the refresh was very fast, quicker than once a second. What gives with the difference?
Jae
03-16-2006, 09:20 PM
#3
there's many different things going on there, but you need to monitor fewer sensors to see a quicker refresh rate.
your scanner is also a big factor on it.
I've got a couple of different scanners and one takes about 20 seconds to update a single value even if it's the only one displayed. the other scanner updates them every couple seconds when you have a screen full of data and several times per second when it's the only thing displayed.
your scanner is also a big factor on it.
I've got a couple of different scanners and one takes about 20 seconds to update a single value even if it's the only one displayed. the other scanner updates them every couple seconds when you have a screen full of data and several times per second when it's the only thing displayed.
03-16-2006, 10:03 PM
#5
Dyno plot says I have the most area under the Administrator curve
Join Date: Jul 2001
Posts: 7,060
My Auterra OBD-2 scanner (works through a palm pilot) is dog slow with "fast scan" enabled. If I disable the fast scan mode, it works a ton faster. Still not nearly as fast as the ECU on an LT1 though.
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