MS2-Extra 36-2-2-2 Manual

MS2-Extra Subaru - RX8 Manual
(36-2-2-2)

Only for use with the MS2-Extra code (HC9S12C64 based microprocessor - MS2 Daughter Board)

NOTE: Please ensure you have one of these daughter boards inside your ECU before continuing. If you have a black microprocessor, then you have an MS1 and these manuals are NOT for MS1 see here for MS1-Extra Manuals

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Please Note:

All of these instructions / diagrams are to be used at your own risk, like most things there is more than one way to do the same thing, what we have tried to do is to offer a method that we have tested or that others have tested for us. No warranty expressed or implied.

Use at your own risk.
If you do have any suggestions or settings that work please let me know Philip.Ringwood(at)ntlworld.com

Main Index of MS2-Extra Manuals

Layout of Components -- Suggested Supply points -- List of common components and part numbers

36-2-2-2 (as used on RX8 and Subaru)

Wiring -- Settings

Internal Wiring

Spark outputs come on D14 and D16, see HERE for options on driving the coils.

V3.0 PCB:

V2.2 PCB:

The circuit below will need to be made for a V2.2 board

DigiKey part numbers:	Farnell part numbers
1K resistor = 1.0KQBK-ND 300R resistor = 330QBK-ND 18K resistor = 18KQBK-ND 39K resistor = 39KQBK-ND 4K7 resistor = 4.7KQBK-ND 1M resistor = 1MQBK-ND 0.01uF Cap = P3103-ND 0.33uF Cap = P10973-ND 330pF Cap = PS1331J-ND 0.1uF Cap = P10967-ND LM1815N = LM1815N-ND	1K resistor = 509-164 300R resistor = 543-251 18K resistor = 543-688 39K resistor = 543-767 4K7 resistor = 543-548 1M resistor = 544-103 0.01uF Cap = 389-0995 0.33uF Cap = 389-1033 330pF Cap = 867-950 0.1uF Cap = 389-1010 LM1815N = 949-3913

Settings

You must set number of cylinders to 4.

If using VB921's for direct control over the coils then set Spark Output to "Going High (Inverted)" and set dwell to Standard and 3.2mS as Maximum. Also set 5.0mS as Cranking Dwell.

Spark outputs come on D14 and D16, see HERE for options on driving the coils.

Suggested points for Supplies inside the V3.0 ECU

Component Pinouts

Pull up circuit diagram

List of component part numbers used in the ignition section:

DigiKey part numbers:	Farnell part numbers
2N2222A = 497-2598-5-ND 1N4001 = 1N4001/4GICT-ND 1K resistor = 1.0KQBK-ND 470R resistor = 470QBK-ND 2K resistor = 2.0KQBK-NB 330R resistor = 330QBK-ND 680R resistor = 680QBK-ND 200R resistor = 200QBK-ND 270R resistor = 270QBK-ND 1K5 resistor = 1.5KQBK-ND 4K7 resistor = 4.7KQBK-ND 0.01uF Cap = P3103-ND 4N25 (opto) = 4N25ASHORT-ND	2N2222A = 920-7120 1N4001 = 352-5326 1K resistor = 509-164 470R resistor = 543-305 2K resistor = 543-457 330R resistor = 543-263 680R resistor = 543-342 200R resistor = 543-214 270R resistor = 543-240 1K5 resistor = 543-421 4K7 resistor = 543-548 0.01uF Cap = 389-0995 4N25 (opto) = 102-1090

Please note: Above part numbers will need checking, some components will come with a minimum order in multiples of 5 and 10.

If you have a question, comment, or suggestion for this FAQ please post it on the forum.

No part of this manual may be reproduced or changed without written permission from James Murray, Ken Culver and Philip Ringwood.

permission from James Murray, Ken Culver and Philip Ringwood.