MS2 v3.57 Direct coil control

[s30kid]

Hey Guys, I have a question about direct coil control with the 3.57 board. I have been reading all over the internet, various websites and megasquirt manuals, but I have not found an answer to the question. Can megasquirt 2 v3.57 control a single coil out of the box or do I need to make hardware mods to the board. 

 

Some people said that I need to build the coil driver circuit (BIP373)

 

Others said that I only need to jumper IGBIN to JS10 and IGBOUT to IGN

 

Another forum post said this.

 

"V3.57 should need no mods for what you're doing other then setting the jumpers: http://www.megamanual.com/357/assemble.htm

You'll want JP1 2/3 and J1 1/2 jumpered. For a stock distro you probably want to invert the ignition input trigger to get enough trigger angle (~60). 

5v to center of Q16 should only be used to drive a transistor ignition module, NOT direct driven coil. "

 

I am really lost here guys. Any help is greatly appreciated.

 

Me setup is:

l28et 

Stock 280z dizzy

36-1 trigger wheel and sensor from diyautotune.com

stock replacement IGN coil from autozone

Coil + wired to fuel pump on the ms relay board

Coil - wired to pin S5 on the ms relay board

 

[Akira]

This link should answer your question http://forums.hybridz.org/topic/73972-megasquirt-ii-on-l28et-need-some-help/

 

If you're not using the stock ignitor or a GM HEI module to fire your coil, then you'll need to solder in the BIP373. Make sure JS10 is going to IGBTIN.

[skirkland1980]

Yeah what he said. The bip 373 at Q16 doesn't come on the 3.57. Set it to js10 going high inverted. Cranking dwell 6ms, running dwell 3ms.