MS2v3 Assembly Qs

[acee_dub]

Hey, I have a few questions regarding the MS2v3 assembly process if you don't mind answering. (for 12v VR6 / msd coilpack alternative / FI application)

I went ahead of the install manual and inserted all capacitors into the board (as per diagram) and bent the legs slightly outward so they would stay in, I also did this with the majority of resistors. I now read the steps in the manual and saw this:

Note: R11 and R10 form part of the EGO input circuit (with C10). It is very important that you do NOT install a capacitor across the sensor input before R11 (C10 comes after R10 and R11 and is fine). Some people have recommended adding such a capacitor to 'smooth' the sensor input. This will cause problems, especially with wide band analog outputs such as you find on Innovate's LC-1.

Also, if you have a wideband sensor/controller, be sure to ground the controller to the same point as MegaSquirt!

I currently have all of the above inserted but not soldered into the board (C10, R10, R11) Can they all be soldered in?

22. Now you need to make a decision on the first 'optional' component: if you are going to use an IAC stepper motor with MegaSquirt-II, you must install a jumper from the hole marked S12C to the hole marked JS9 (+12C). These are on the bottom side of the board, on the DB9 side of the processor. DO NOT INSTALL THIS JUMPER FOR NON-MegaSquirt-II APPLICATIONS - IT WILL DESTROY THE PROCESSOR!!

Do I need to follow this step (optional) and if I do does 'installing a jumper' mean using a piece of the provided wire to connect the JS9 hole to the S12C hole?

65. It is choice time again. In this case, you will decide whether to populate the high-current ignition driver circuit. This circuit can be used to drive a single coil in a distributor application. In conjunction with an appropriate input signal (from a VR, Hall, or optical sensor, or even points), it allows you to eliminate a separate ignition module, such as a GM HEI 7 or 8 pin module, and run the coil directly from MegaSquirt.

Do I populate the high-current ignition driver circuit or not?

[ps2375]

Why not just follow the manual steps, easier to not miss a step.

1. yes
2.depends, yes
3.yes, you can but you don't have to if you are using another method of triggering.

[need_a_VR6]

1) yes
2) if you have MS2, yes, use a piece of wire
3) are you direct driving the msd coils are retaining the stock ignition amp?

[acee_dub]

I am keeping the stock amp, put together some of the board today.

[need_a_VR6]

If using the stock amp use this circuit:

http://www.msextra.com/doc/ms1extra/...nual.htm#bosch

[acee_dub]

Broke a transistor leg doh! going to pick one up from a local electronics shop later... very dissapointed with my mistake

[need_a_VR6]

65000rpm and fp cycle is a config error. If you use ts and cycle power it will tell you why

[acee_dub]

Fixed RPM it now reads 0 and the fuel pump stopped cycling, tps also works now and when I calibrated it, the full throttle ADC count was lower than closed throttle.
reverse of


The O2 is still maxed out at a reading of 20~ or more... is this normal for motor being off or should it be 0? Using the JimStim my O2 worked fine when playing with the pots.




I have my sparks A/B/C pulled off the LEDs and jumpered into the IGN pin, how do I get 3 spark sources? Do I just split my IGN into three and solder to the Motronic connector?

[need_a_VR6]

From what I remember ms2 is fune with reverse tps, ms1 I know for sure doesnt.

You need to brinh each spatk output to an unused pin, ign, iac, spr. Any are fine just remember what is what.

[acee_dub]

Cool thanks

did the following:

D14 -> IAC1B (MS Pin #27) -> Motronic pin 8 Spark A (1/6)
D15 -> IAC2A (MS Pin #29) -> Motronic pin 52 Spark B (2/5)
D16 -> IAC2B (MS Pin #31) -> Motronic pin 60 Spark C (3/4)

IAC1A (MS Pin #25) is my tach circuit -> Motronic pin 22

Should this be enough to get it started? I am still missing the following:

Motronic Pin # / Function
17 MAF
5 CEL
49 Fan/Smog Relay
28 Heated O2 Relay

[need_a_VR6]

Sounds like you got it. If you are using the stock O2 wiring for your wideband you can just jumper 30/87 on the relay base, that circuit already gets power sourced by the fuel pump relay.

[acee_dub]

When I crank, the tach in ts or the car does not move.. is this a config issue in TS? I am using someones tune from msruns. Using the JimStim I made it crank and idle using 60-2 tooth wheel dip switch setting.

[need_a_VR6]

Check the tooth logger and see what the signal lools like.

[acee_dub]

Ok I got it to read rpm, my VR -ve wire came loose off the motronic connector.. I tried to crank it.. it sounded.. intense where do i go from here to properly do this without blowing anything up the msq file i was using is this one: http://www.msruns.com/download/file.php?id=6086 when i tried to load yours they errored in TS (i am using a different version of ms software i believe ms2 extra v3.10)

[need_a_VR6]

Ms2 extra can port to other ms2/3 versions. You will get errors but they tend to self-resolve.

[acee_dub]

Okay, here is the output of loading it on my TS, I will burn it anyway.

426 Warnings:
Warning: injPwmT1 not in current configuration. Value ignored.
Warning: baroCorr1 not in current configuration. Value ignored.
Warning: egoCount1 not in current configuration. Value ignored.
Warning: mapBins1 not in current configuration. Value ignored.
Warning: egoDelta1 not in current configuration. Value ignored.
Warning: fastIdleT1 not in current configuration. Value ignored.
Warning: rpmk1 not in current configuration. Value ignored.
Warning: cltType1 not in current configuration. Value ignored.
Warning: nInjectors1 not in current configuration. Value ignored.
Warning: divider1 not in current configuration. Value ignored.
Warning: engineType1 not in current configuration. Value ignored.
Warning: twoStroke1 not in current configuration. Value ignored.

the maps still got loaded I think, would your tune be okay to do a start on? Is it normal for it to be rough on another motor or are there things I should check that could be set up wrong?

[acee_dub]

Tried to start today and it would not go, so I added throttle and it still wouldn't idle.. Here is a tooth log. Doesn't look right

[need_a_VR6]

Email me your msq at kandpperformance at gmail dot com.

[acee_dub]

Mailed, is it a timing issue?