How can I get VCDS as fast as possible

nils 6l

Dutch Driver
Aug 9, 2008
61
0
Netherlands
I Want to do an accaleration measurment with VCDS on my Seat Ibiza 6L (2004). To get a reliable measurent the logging has to be as fast as possible.

Right now, when I go te [engine] and than [measurement blocks] and I select group 005, I have an data logging time of 4,5 times a second (which isn't very fast). This is on the protocol KWP-1281.

This gives an measurement accuracy of +/- 0.45 seconds which is off course far to much for an accurat measurement.

Here you can see my 100-200 km/h run (62 - 124 mph)
Sprint100-200.jpg

(Had about 235 bhp at that time)

I thought the OBDII of my Ibiza could also communicate by the KWP-2000 protocol which is way faster. Why doesn't VCDS uses this protocol to measure this block?

How Can I get the data logging as fast as possible?

I already found this on the ross-tech site, but this doesn't help anything when I'm logging:


4.8 How can I speed up my sample rate in VAG-COM?

The sample rate at which you can view and log data is largely determined by each controller in the car. There are a few things you can do to speed up the rate for a given controller. First, logging one group at a time, rather than two or three, will help greatly. In order to get the highest sample rate possible go to the Options screen and set Blk Int to 25 and Char Int to 0. Note, however, that this may cause unreliable communications with some controllers. The KP2 Time parameter only applies to controllers using the KWP-2000 protocol. Decreasing it speeds up the sample rate in Measuring Blocks on control modules that use the KWP-2000 protocols. Try setting it to 0. If any of these adjustments cause unreliable communications, change them back closer to the defaults. If in doubt, use the Restore Defaults button!

In Engine controllers using KWP-2000, there is a [Turbo] button in the latest version of VAG-COM. This can significantly speed up sampling, in some cases to over 30 samples per second. See the Measuring Blocks page for more information.

I can not use the turbo button as vagcom uses the KWP-1281 protocol..
 
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