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Thanks Tazzi.

Just cleaned up my logging code.. This should work with most J2534 devices instead of just the gm mdi, if you want to try it and let me know what works and what doesn't that'd be great..
Set up for high speed(6&14), Gmlan(pin1) and also will log VPW as well.. Haven't tested too much with vpw but it's working with single bench ecu..

Just a console app, but you can save it all to a file, scroll it across the screen in live time, select from a small selection of filters, and even specify search criteria to be filtered, separated by comma's.. It is very basic but handy to have to be used with a Y cable..

Did you by any chance do a before and after diff (or save a branch) with the installation of Kuzmin's DllExport to see exactly what it does ??