Originally posted by Star Turbo Talon
I found the output information on the MS material that directly states and diagrams you to use the ignitor when using the v3.0 board only. When using the v2.2 you dont need to, instead you use the LED transistor output Like we have been doing since the beginning. Since you have studied the v3.0, why is that Paul? It must be the design of the board because the basic circuitry is the same...no?

Terry, I don't quite understand what you're saying here...

For direct connections to the coil pack, as with the 420A, we use Bosch BIP373 ignition modules triggered by 330 ohm resistors connected to the bases of Q6 and Q8. For connections to an external ignitor or ignition box, as with the 4G63, we connect the collectors of Q6 and Q8 directly to their corresponding DB37 pins along with 1k ohm pullup resistors to +5V.