Anyone use these?

http://www.aeroforcetech.com/products_interceptor.html

Yeah, I used one for a while before I converted to OBDI to use Datamaster / TunerCat. It's a great gauge that came in handy several times. I only had two complaints about it - couldn't use the programmable inputs to read from an oil temp sender (wrong voltage range) and the PID it uses for an LT1 knock sensor was wrong. It still read knock retard but returned incorrect values...it said I had over 50 degrees of knock retard a few times I had it mounted on the A pillar for a few years and those were really my only issues with it...good product.