One thing on the timing, it will tell you to put the shunt wire on and unplug this and that. I did that and my timing seemed retarded too much. I drove, setup and maintained my own race cars so I installed the distributor and ignition system per the book, however, I used my dial back timing light to make sure I had the full 24 degrees of timing in at a certain rpm, say 2600 by adjusting the distributor while the engine was revved at that particular rpm. So with the mechanical timing off idle which was set at about 10 deg. btdc, plus the 24 deg. advance by the module, I had a full 34 degrees by the rpm I wanted. Works great....but you have to have a dial back timing light. I wouldn't use anything otherwise. However, either way you do it works. I just like to know my exact timing at my mid range and max rpms. I try to dial in as much advance as my engine will take on 87 octane without detonating or hard starting.
