You can't get lap times, etc. through Outgauge, you can only get that via InSim. Outgauge is literally just what the dials in-game show
It's possible to use InSim and Outgauge at the same time, though. However it's a bit more complex as using InSim you get information about every vehicle in-game, not just your own.
To use InSim+Outgauge at the same time you'd setup an InSim connection, and in the IS_ISI packet you'd set udpport to your UDP listener, and then send a IS_SMALL with subt set to SMALL_SSG (2). You'd then use the plid in the outgauge pack to know what IS_LAP, etc. packets to look for (since you'd get them for any player).
That might sound a little confusing if you're familiar with InSim... It might be worth checking out InSim.txt which explains each packet, and possibly checking out various libraries for InSim - since they remove some complexity for maintaining InSim connections and how to deal with packets. There are a whole bunch of libraries in
http://www.lfsforum.net/forumdisplay.php?f=179 for PHP, Python, .Net, etc.
I've gotta head back to work now, so I probably won't be able to look at this thread until later today, but I'm sure other guys here can help out
