Sean,

How did the Scangauge work out?

Working out alright. I especially like the temp displays after doing all the grill blocking. The mileage readings are a bit different than the SMID since it's based on RPM as others have mentioned here. I'm on the second tank and am getting it pretty closely calibrated for my driving style and the commuting route. BTW, I'm in closed loop pretty much all the time except for the first few minutes when starting cold.