I didn't read the whole thread but the aeroforce guage pulls its power from the obd2, but if its like mine, a 2001, the obd2 in mine does not supply power. All you have to do is wire it up on a seperate accessory power and your fine. That thread was probably either from a bad guage, which they fix for you, or that the dual guages can't run off of one obd2 power.
The data rate on the aeroforce is pretty damn good, I set it to mpg and everytime I let off it's instant, it's really reversed some of my driving styles, some places I wouldn't expect getting 10mpg, so I figure out what gear and rpms are best.
Not only does it display multiple readings from your car's computer, you can pull diagnostic codes, calculate 1/4 times/speeds fairly accurate, set led lights to come on at a certain perameter and value, (hit 10+ boost = red led), view engine misfires for each cylinder, run a scan cycle instead of just displaying 2 parameters, a/d inputs and tons of other stuff that I don't use.
