It seems to feed off of the MGM controllers (not the car ones, currently). The Eagle Tree Micro Recorder can do most of what the Black Box can, but will work with anything. That's pretty cool that MGM has made a device that is capable of recording the controller's measurements, though.
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz
Yeah, metalman, that is true, the only dislike is that it's an inline measurement, it are 4 extra weldingspots in the battery circuit, it would be a reason for me, not to buy it. i like the normal eagletree better.
That's just my opinion though, i like the fact that more producers are aware of the need for black boxes.