When using ms3 with the 3.57 board are there any hardware changes that need to be made? I couldn't find any info on it. I know I can select 420a in ignition of timer studio but the hardware part confused me a little.

Originally posted by Dstach
When using ms3 with the 3.57 board are there any hardware changes that need to be made? I couldn't find any info on it. I know I can select 420a in ignition of timer studio but the hardware part confused me a little.

You can use the VR input as-is, but you need to configure the potentiometers properly and install a pull-up resistor:

http://www.msextra.com/doc/ms3/ignition.html#vrv357pull

In order to drive the stock 420A ignition coil, you will need to add two ignition drivers too:

http://www.msextra.com/doc/general/sparkout-v357.html#2coils

Okay thank you. And to just be clear for the ignitor, I'm going to use the Bosch ones. I would send the spark output (I will use MSX) to pin 2 on the ignitor, pin 3 would be ground and pin one would have a 330 ohm resistor then to the coil? Then I would use MS3X logic spark output. I want to install them out of the case to keep it cleaner in the case. I just have to use a heat sink and a mica-insulator. Means I'm using MS3 Im assuming I wouldn't need all the internal jumpers that ms2 and 3 need?

Originally posted by Dstach
Okay thank you. And to just be clear for the ignitor, I'm going to use the Bosch ones. I would send the spark output (I will use MSX) to pin 2 on the ignitor, pin 3 would be ground and pin one would have a 330 ohm resistor then to the coil? Then I would use MS3X logic spark output. I want to install them out of the case to keep it cleaner in the case. I just have to use a heat sink and a mica-insulator. Means I'm using MS3 Im assuming I wouldn't need all the internal jumpers that ms2 and 3 need?

If you're using the MS3X outputs, you can use a 120 ohm resistor connected to the base of the BIP373's (the MS3X spark outputs already have 200 ohm resistors in series). Otherwise, it sounds like you have the right idea.

Okay thank you very much!