MS2 v3 CAN by Reverant - sequential ignition - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-29-2013, 10:27 AM   #1
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Default MS2 v3 CAN by Reverant - sequential ignition

I have got MS2 v3 can ecu from Reverant (for 00 NB miata)
I just purchase toyota cops and would like to connect them in sequential mode.
Sequential ignition mode was in description for this ECU.
I have got pinout of this ecu, but it has got only ign1 (coil for 1st ,4th cyl. ) and ign 2 output (coil for 2nd ,3rd cyl.)
Do you think ,is it possible to connect Toyota coils in sequential mode? what set up changes do I need to do next (wasted spark - sequential, dwell from 4,5ms to 3,5ms while cranking and 3,5ms to 2,5ms standard)?

Ecu pinout:

Top connector:
Pin Function
1 Inj Cyl 1
2 Inj Cyl 2
3 Inj Cyl 3
4 Inj Cyl 4
5 Fidle
6 Aux Out 1
7 Alternator Out
8 Clutch Switch
9 Neutral Switch
10 A/C switch
11 VICS/VTCS
12 Battery Light
13 MIL
14 A/C compressor
15 Coolant fan
16 A/C fan
17 Knock in
18 Aux Out 2
19 Tach out
20 Inj grounds
21 Inj grounds
22 Sys grounds
23 Sys grounds
24 12V
25 EBC out
26
27 Switch tables
28
29 PCM ground
30
31
32
33
34 VSS
35 PSP
36 Launch
37 Boost Hi/Lo

Pinout for bottom connector:

1 Sensor ground
2 Sensor ground
9-19 Ground
20 IAT
21 CLT
22 TPS
23 O2 In
24 Crank In
25 Cam In
26 5V Out
28 12V In
31 IGN2
36 IGN1
37 Fuel Pump

Last edited by elektron; 11-29-2013 at 11:34 AM.
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Old 11-29-2013, 12:03 PM   #2
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doesn't sound like it's able to in the current state. You'd need to ask Dimitris directly about your specific unit.

It depends what he has JS11, and the three LED circuits wired for. That's what you need to run 4 spark outputs (the middle LED circuit and using JS11).
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Old 11-29-2013, 04:36 PM   #3
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Sequential C and D are available on pins 3 and 4 on the lower connector.
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Old 12-11-2013, 04:29 PM   #4
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Thanks Dimitris, toyota cops just installed (in wasted ign mode as yet) car started without problem,dwell time I also changed.
Now I will try to connect it in sequential ign. mode, I hope it will run.
Anybody here with MS 2 or 3 with sequential ign. and COPs installed?
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Old 12-20-2013, 02:21 AM   #5
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Sorry, not going to help BUT why is sequential ignition desired...it seems like a bit of a mission all the time.

Does it have spectacular advantages over normal ignition?
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Old 12-21-2013, 10:51 AM   #6
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I have it on my DIYPNP. Advantages for any engine are that you get lower cycles on the coils, individual cylinder timing is possible, more dwell charge time is available, and maybe something else I cant think of. Are any of these things super important must haves? No, or at least not for a relatively low rpm 4 cyl engine like the BP but other engines could benefit more from these advantages.
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Old 12-29-2013, 05:54 PM   #7
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Right, those features are well off my radar at the moment.

I see sequential all over the show in relation to MS tuning and wondered what the point was.

Appreciate the answer though!
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