MSefi.com read only forum (Jan.15,2018)

Posted: **Wed Sep 12, 2012 3:28 am**

Hi everyone!

I started to build my MS board and I'm at the point 22 of the manual ...
I have no IAC stepper motor or solenoid, just a calibrated hole so I think I go directly to the passage of the coil?

And about the coil, I have purshase an inductive coil (http://www.DIYAutoTune.com/catalog/ign1 ... p-444.html),
I use the stock distributor (4 cyl), What kind of mount do I do? (I think it's on this page but... http://www.megamanual.com/ms2/Ignition.htm)

I think it's not an important problem but i would like to be sure before continue.

Thanks!

Posted: **Thu Sep 13, 2012 5:07 am**

It doesn't hurt to install the stepper IAC jumpers; you may find a use for them later.

The IGN-1 needs a Bosch BIP373 to drive it.

Posted: **Fri Sep 14, 2012 9:45 am**

Ok, thank you!

For the coil, I take that : (source : http://www.DIYAutoTune.com/tech_article ... squirt.htm)

BIP373s on a MegaSquirt-II V3.0 or V3.57 - Single Coil
Hardware mods required:

Jumper IGBTOUT to IGN to send to IGBT ignition coil driver signal out of pin 36 on the DB37. (not needed on a V3.57)
Cut out R57 if fitted on a V3.0 (This won't be there on my units, though.).
Our assembled V3.57 boards, if not fitted for direct coil control, will have a jumper from JS10 to the center hole of Q16. Remove the jumper from the center hole of Q16, and reroute it from JS10 to IGBTIN.
Solder a BIP373 into the Q16 slot, using a mica insulator.

External wiring:

Connect the negative terminals of the coil to pin 36.

MegaTune settings required:

Set Spark Output to "Going High (Inverted)." Setting this wrong can overheat the BIP373s or damage the coils.
If using MS2/Extra, set Spark A output pin to JS10.

Enable dwell control and adjust as needed to match the coils you are using. Set the dwell at a very low value to start with and increase it slowly. Back it off if the BIP373s become hot to the touch.

Posted: **Mon Sep 17, 2012 6:07 am**

Correct.

MSefi.com read only forum (Jan.15,2018)

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