Dodge truck V10 support

[E4ODnut]

Hi Matt,
Thank you. 1st Gen should work for what I have now.

So, what happens if either of my sensors fail, I can't get a replacement, and building my own turns out to be not a practical alternative? Is there any possibility that the firmware could be modified to support an external 60 - 2 trigger for waste spark and semi-sequential injection?

[Matt Cramer]

So, what happens if either of my sensors fail, I can't get a replacement, and building my own turns out to be not a practical alternative? Is there any possibility that the firmware could be modified to support an external 60 - 2 trigger for waste spark and semi-sequential injection?

No firmware changes would be required; that's already supported and has been used on BMW V10s already. If the cam sensor still works, you can even use "Poll Level" mode to get full sequential.

[E4ODnut]

Hi Matt,
The Dodge engine is uneven firing, does that make a difference?

I can't think of any reason why I would want to use sequential injection, but thanks anyway.

[Matt Cramer]

Hi Matt,
The Dodge engine is uneven firing, does that make a difference?

I can't think of any reason why I would want to use sequential injection, but thanks anyway.

Odd fire V10s are going to need a cam signal. No getting around it. Sorry, forgot that detail.

But a 60-2 wheel plus a cam signal will get the job done if for some reason you have to change out the trigger wheel.

[E4ODnut]

Hi Matt,
The trigger wheels aren't the problem, the sensors are, because they are no longer available if one or both of mine die.

Are you sure that an odd fire V10 with waste spark and semi-sequential injection can't be run with just a 60 - 2 wheel?

[jsmcortina]

You need the cam signal too because it is an oddfire V10.

James

[E4ODnut]

OK. Then the first thing I have to do is design and make replacement sensors.

[E4ODnut]

I think that I now understand why my engine will need a camshaft position sensor regardless of the configuration of the crank position sensor. If my reasoning is correct, then all uneven firing engines with distributor less ignition will require some form of camshaft position sensor.
Is that correct?

[Matt Cramer]

Any odd fire engine with a wasted spark ignition, yes.

If it is possible to control all the coils separately, it is possible to run without the cam sensor.

[E4ODnut]

Thanks Matt. I'm going to give this a lot more thought.

[E4ODnut]

My order from DIY-Autotune has arrived. MS330-K, MS3Xpander, MS3RTC-K, INNVT-3873 and WB-O2BP. In the mean time I've been studying the MS3 documentation (and there is a lot of it!), but I see very little direct reference for the Viper/Ram Gen 1 engines, in particular, for the actual physical wiring of the injectors and coil drivers to the MS3Xpander.

As far as I know, I am the only one who has attempted to squirt the Dodge truck V10. If there are any other documented cases out there I haven't been able to find them, so I am going to need some assistance in getting things set up correctly.

I want to keep the stock configuration and wiring, which is waste spark and semi-sequential injection.

The firing order is: 1-10-9-4-3-6-5-8-7-2
The ignition coils are paired: 1&6, 10&5, 9&8, 4&7, 3&2
The injectors are paired: 1&10, 9&4, 3&6, 5&8, 7&2

Can someone please tell me the correct way to wire the ignition and injection pairs to the MS3Xpander?

[Matt Cramer]

The firing order is: 1-10-9-4-3-6-5-8-7-2
The ignition coils are paired: 1&6, 10&5, 9&8, 4&7, 3&2
The injectors are paired: 1&10, 9&4, 3&6, 5&8, 7&2

OK, I'd wire them this way.

Spark A: 1/6
Spark B: 10/5
Spark C: 9/8
Spark D: 4/7
Spark E: 3/2

Injector A: 1/10
Injector B: 9/4
Injector C: 3/6
Injector D: 5/8
Injector E: 7/2

[E4ODnut]

Perfect. Thanks Matt.

[E4ODnut]

I have a MPXA6115A that I would like to use for an on board Baro sensor. It will fit on the proto area but I am not completely clear on how to connect it.
I believe that I can mount it on the proto, connect pin3(gnd) to ground, pin2(5V) to 5V, pin 4(Vout) to a 1k resistor. Connect the other side of the resistor to a .22uF cap to ground and to JS5/AD6.
This should still leave me with another analogue input on the main board, JS4/AD7 as well as AN11, AN12, and AN13 on the MS3Xpander board for future use.
Am I correct on this?

[E4ODnut]

I have another question.
I am having some difficulty setting up the fuel injection for semi-sequential. In the "Sequential fuel injection" section I have selected "MS3X fuel" and "Semi-Sequential", which should use five injection drivers. But, when I go to the "I/O pins list showing usage", it lists that I am using injector channels A through H plus INJ1 and 2.
What am I doing wrong?

[jsmcortina]

I'm pretty sure this is expected, the outluts will be fired in pairs.

James

[E4ODnut]

OK.
Another thing I noticed that in "Ignition Options/Wheel Decoder", I have "Spark Mode" selected as "Viper V10 Gen 1", but the "Oddfire first angle" and Oddfire phasing options are greyed out. Is this normal?

[jsmcortina]

Yes. They are built-in.

James

[E4ODnut]

Very good.
I'm still a bit confused about the injectors though.
If they fire in pairs, which ones are paired together?

I will be connecting the injectors this way:
Injector A: 1&10
Injector B: 9&4
Injector C: 3&6
Injector D: 5&8
Injector E: 7&2

I will have nothing connected to Injector channels F,G,H,I,J.

I want to use the same physical connections and strategy as the OEM, which, to the best of my knowledge works like this:

At 6 degrees before TDC between the exhaust and intake stroke, when the intake valve on #1 is just starting to open, and the intake valve on #10 is 54 degrees before starting to open, inject 1&10.
Rotate 54 crank degrees and inject 1&10 again
Rotate 90 crank degrees and inject 9&4
Rotate 54 crank degrees and inject 9&4 again
Rotate 90 crank degrees and inject 3&6
Rotate 54 crank degrees and inject 3&6 again
Rotate 90 crank degrees and inject 5&8
Rotate 54 crank degrees and inject 5&8 again
Rotate 90 crank degrees and inject 7&2
Rotate 54 crank degrees and inject 7&2 again
Rotate 90 crank degrees and inject 1&10
Repeat

[E4ODnut]

Anyone there??