There is a lot of little stuff in the box. A couple weeks ago, we tried to take out the box because a solder joint had come undone inside it, but we soon found out that with that out, it allowed the transponders to count if you passed over the wire that led to the computer. It also picked up a lot more noise(radio interference) without the box and it caused it to miss counting a lot of people.
1989 Mazda Rx7
greddy t04b, megasquirt ecu, PlX wideband, 12x28x3 fmic, 50mm hks clone wg, ssqv bov, Safc, ss oil lines, walbro fuel pump, tubo intake manifolds, ssac exhaust manifold, 3" dp, 550cc primary/720cc secondary injectors, etc.