Post by
nismopu »
https://forums.nicoclub.com/nismopu-u29994.html
Sat May 24, 2008 11:50 pm
It doesn't send any voltage back, just a pulse and a very minute one at that, hence why the wire itself is shielded. Theres a 360 count refference wheel on the outside used to determine advancement/retardment but the actual firing of the plugs/injectors is done via the 6 windows on the smaller part of the wheel, aka the six clicks you refer too.
IMO anything made by MSD is a waste of money and time unless it actually increases the spark energy of the already impressive nissan ignition system. Plus the MSD boxes burn out more than points on an old chevy v8. peace.