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Old 07-24-2010, 03:20 PM   #1
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Default Running sequnetial injection & ignition through my MS3X

MUHAHAHA.

fuel injector harness modded from batch to 4 separate inputs, with the ability to go back to batch if I ever need to plug in an inferior MS to my car.

Onto my COP harness...
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Old 07-24-2010, 03:47 PM   #2
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You dirty dog. I think I will order my daughter card just because of your thread. Thanks buddy for the motivation.
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Old 07-24-2010, 03:56 PM   #3
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I'm doing it cause I just picked up the MS3X expansion card. I didn't want to have to build additional drivers for everything, so for hardware it's pretty much just plug and play. As far as wiring, I need to run 4 additional wires to my engine bay (2 for each) and modify my MS batch harness...
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Old 07-24-2010, 04:30 PM   #4
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MS3X...you double dirty dog. I'm so jealous.
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Old 07-24-2010, 04:57 PM   #5
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Good god man quit dragging your heels!
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Old 07-24-2010, 07:44 PM   #6
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I'm working on the MS3X wiring harness now. Going to stop for dinner soon, then I'll run wires tomorrow into the engine bay and try it out...
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Old 07-24-2010, 08:12 PM   #7
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all done with the external stuff finally...good lord that took all day. I completely redid the COP harness so that took a big chunk.
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Old 07-24-2010, 09:56 PM   #8
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Very nice, whats some of the benefits of the MS3 board over MS2?
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Old 07-25-2010, 11:22 AM   #9
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Here's the fuel injector harness:



added two inputs so all four channels have an individual input, then added a connector so I can go back to batch if necessary.


reworked COP harness:



same thing, all four cops are on four different inputs, connector that can bring them back to wasted. I did an awful job building it the first time after tearing it apart, I replaced the connectors I build with factory pigtails.


MS3X Card:









Then to reward myself:

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Old 07-25-2010, 02:12 PM   #10
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Unsuccessful first attempt. I'm unsure if I have a wiring issue or setting issue. I'm sure I have sequence correct and the injectors wired the correct firing order. I'll have to test one at a time later, it's 97*F out and feels like 105*F so I'm done for the day, I'll mess around tomorrow in my parking garage.


EDIT: Went back over the documentation and I did in fact wire the coils up wrong. I have cylinders 1-2-3-4 as A-B-C-D where it needs to be A-C-D-B. I think that should solve the issue.
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Old 07-25-2010, 02:39 PM   #11
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Firing order fail...

Otherwise looks awesome and kudos for attempting. In for driving impressions.
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Old 07-25-2010, 06:54 PM   #12
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Set both ignition and injector outputs in firing order. 1 3 4 2. That should fix you up.
Are you bringing cam in on JS10 or through the 3X?
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Old 07-25-2010, 10:07 PM   #13
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that always screws me up.
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Old 07-26-2010, 01:29 AM   #14
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Say hello to Frankensquirt.
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Old 07-26-2010, 03:47 AM   #15
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I understand the sequential ignition part....but whats the benefit of doing fuel sequential as well?
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Old 07-26-2010, 05:13 AM   #16
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There are more benefits to sequential fuel than ignition. You can run larger injectors and maintain a steady lean idle is the big win, mild improvement in town driving mpg and smoothness too.
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Old 07-26-2010, 09:21 AM   #17
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Quote:
There are more benefits to sequential fuel than ignition. You can run larger injectors and maintain a steady lean idle is the big win, mild improvement in town driving mpg and smoothness too.
yep, ran seq. fuel only this morning. Was able to reduce the pulse width at idle a good amount, with a/c on from 2.4ms to 2.0ms. Throttle response was improved which was surprising because my EAE is already tuned very well. I'll get the spark firing order solved at lunch.

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Are you bringing cam in on JS10 or through the 3X?
No, Ben I did not run the cam signal in through the MS3X, I left everything else but fuel/spark as is. Is there a benefit, I'm running a dual opto circuit?

At least I know my jumper connectors work to bring my harnesses back to batch/wasted. So that's cool.
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Old 07-26-2010, 09:29 AM   #18
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This, crank trigger, VVT.

I like this a lot, there is a lot of good stuffs going on with MS dev at the moment.

Last edited by webby459; 07-27-2010 at 10:01 AM.
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Old 07-26-2010, 10:07 AM   #19
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Quote:
Originally Posted by Braineack View Post
No, Ben I did not run the cam signal in through the MS3X, I left everything else but fuel/spark as is. Is there a benefit, I'm running a dual opto circuit
If you've already built out a second conditioning circuit, then probably not for this application. I would expect the conditioning circuit in the Expander to be a bit better than a simple jumper and pull up to JS10.
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Old 07-26-2010, 11:34 AM   #20
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Quote:
Originally Posted by Braineack View Post
yep, ran seq. fuel only this morning. Was able to reduce the pulse width at idle a good amount, with a/c on from 2.4ms to 2.0ms. Throttle response was improved which was surprising because my EAE is already tuned very well. I'll get the spark firing order solved at lunch.
.
You know I'd forgotten about that, with sequential I've noticed you need barely any AE (can't get my head around EAE).

Infact I have precisely zero AE atm in the hunt for an irritating half misfire, and throttle response is virtually identical, I've half a mind to leave it off completely...
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