I've been looking at laptop-based OBD2 tools because the SG1 isn't giving me all the info I want to see. Specifically, I want to know about fuel trim, since that's something that would be affected by HAI and EGR. But fuel trim is one parameter that the SG doesn't offer.
Also, I'll be able to log & graph relationships between sensor readings, whereas the current SG 1&2 only let you view "instant" data, which is actually pretty useless if the reading changes frequently by its nature (e.g. timing advance, throttle position, load etc.).
I realize the SG2 is supposed to have a USB or flash media logging feature coming out, but I don't know if it will include ALL parameters, or just the ones currently accessible (e.g. no fuel trim).
I'll be very interested to hear if you find a package that works well. The ability to collect and analyze data for an entire run would do wonders for our understanding of what these machines are doing.
I don't think it would work on your car but I have been running vag-com http://www.ross-tech.com/
for a while. It lets you change a LOT of things on the car, like how the doors lock, to engine timing to real-time MPG and LOTs of logging. I really like up, but it is a pain using the laptop all the time. I was so glad when SG came along.
Hey doesn’t the new SG2 have a USB out and logging options?
Nerdy, eh? Well then the line forms behind me! I have three different datalogging programs loaded onto two Palms! I personally don't think of them as nerdy since they are essential tools for improving the 1/4 mile capabilities of my cars. The simplest program show about 20 different gages. The more complex loggers are customizable so I can export any address in the ecu to the logger and see what it's doing. I couldn't tune without them.
OK I'm bragging a little, but I still don't have one that outputs instantaneous mpg so I'm still flying blind!