Who here has GMDIS working on a v6?

All questions about MS2/Microsquirt/Microsquirt module. See also MS2/Extra manuals

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WillExoIX
Master MS/Extra'er
Posts: 495
Joined: Sat Jan 25, 2014 12:13 pm

Who here has GMDIS working on a v6?

Post by WillExoIX »

Same question as in the topic.
How did you wire in?
What settings have you used?
What worked for you?

95 Camaro 3.4 iron heads
96 Buick Century 3100 DIS setup
MS2/Extra 3.4.2. Wired per the manual for HEI7/8
Image
Megasquirt 2 V3.0 Running Msextra 3.4.2. in a 1989 Camaro RS .48AR/60mm Turbo 3.4L/700R4
Boost control, Fan control, Stepper IAC, Launch/Antilag, Working on the GMDIS, and Methanol injection
WillExoIX
Master MS/Extra'er
Posts: 495
Joined: Sat Jan 25, 2014 12:13 pm

Re: Who here has GMDIS working on a v6?

Post by WillExoIX »

I made this thread to get actual working information in the manual. Because what I have come across is different than what's in the manual, and what's in the manual "needs confirming".

Not sure why the manual wasn't updated when people got this working. Though those links, pictures and people are long gone.

Sent from my SM-G900V using Tapatalk
Last edited by WillExoIX on Fri Aug 18, 2017 9:27 am, edited 1 time in total.
WillExoIX
Master MS/Extra'er
Posts: 495
Joined: Sat Jan 25, 2014 12:13 pm

Re: Who here has GMDIS working on a v6?

Post by WillExoIX »

I'll start, since mine is now running.
Will edit if I need to when we figure out the lack of bypass signal.
EDIT: Bypass wire has the proper 5 volts

Spark Mode= Basic Trigger
Trigger Angle/Offset=58.50
GM HEI/DIS options =GM Bypass on D16
Skip Pulses= 1
Ignition Input Capture= Falling Edge
Spark Output= Going Low (Normal)
Number of Coils= Wasted Spark
Spark A output pin= D14
Fixed Advance= Use Table
Use Prediction= No Prediction
Cranking Dwell= 6.0
Cranking Advance= 3.0
Dwell type= Fixed Duty
Dwell duty= 50

Of note this is a 1996 ODB2 Buick Century 3100 DIS setup on a 1995 Camaro 3.4L
I have discovered the CPS pinout at the ICM connector is as follows;
Pin A is the purple wire, and Pin B is the yellow wire. Not vice versa as is listed in just about every pinout I have come across. All the others are correct.
This COULD be the fact that I am using the ODB1 95 Camaro CPS with the ODB2 96 Century DIS module, so YMMV.
EDIT: Updated trigger angle now that its dialed in.
WillExoIX
Master MS/Extra'er
Posts: 495
Joined: Sat Jan 25, 2014 12:13 pm

Re: Who here has GMDIS working on a v6?

Post by WillExoIX »

Guess I'm the only one running GMDIS. :crazy:

Sent from my SM-G900V using Tapatalk
Image
Megasquirt 2 V3.0 Running Msextra 3.4.2. in a 1989 Camaro RS .48AR/60mm Turbo 3.4L/700R4
Boost control, Fan control, Stepper IAC, Launch/Antilag, Working on the GMDIS, and Methanol injection
Matt Cramer
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Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: Who here has GMDIS working on a v6?

Post by Matt Cramer »

We are running a GMDIS on a V6, but it's an MS3Pro rather than an MS2. If you're curious about what settings that took, here they are.

Make: Buick
Model: Regal Grand National / GNX
Engine: 3.8 Turbo
Year range: 1985-1987

Spark mode: Toothed wheel
HEI / GMDIS, TFI, C3I Options: Buick C3I
Ignition input capture: Rising Edge
Spark output: Going High
Number of coils: Single Coil
Trigger wheel arrangement: Dual wheel
Trigger wheel teeth: 3
Tooth #1 angle: 70
Main wheel speed: Crank wheel
Second trigger active on: Rising Edge
And every rotation of: Cam
Dwell type: Standard dwell
Nominal dwell: 3.0 (adjust as needed if using non-stock coils)
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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