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Megasquirt setup for 930 and dual plug EDIS

Those of you following the rebuild forum may have seen my recent update on the 930 engine in my 911SC (thanks to all here and to Chuck Miller at MillerSport for guiding me thru the build). Now that everything is working I'm having a blast. Here are the basic details:

- 1978 930 3.3 engine
- case line-bored and shuffle-pinned by Ollie's
- twin-plugged, ported, polished & flowed heads
- full balancing
- 8:1 compression ratio
- 964 cams
- 3.2 Carrera intake
- 50# injectors
- K27-7200 turbo
- GoingSuperFast full-bay intercooler
- B&B headers
- dual 6 plug EDIS ignition
- NGK BKR7EIX plugs
- 0280122001 Bosch throttle position sensor
- Megasquirt II v 3.0

Several of you asked that when I got a working Megasquirt configuration that I share. I'm still fine tuning, but here are some files that could be useful to those of you taking on a similar installation. Remember, these files work for my configuration. If you choose to use them and damage your engine, it is your responsibility. You should read the Megasquirt documentation closely and review all of the settings and tables for applicability to your application before proceeding.

I have placed copies of my config files on my server. The files include:
VE table (vex file)
Spark table (vex file) revision 03-08-09
AFR table (vex file)
Some sensor config information (Microsoft Word file)
Some wiring documentation-rev 04-28-06 (Microsoft Word file)
Dual plug EDIS ignition wiring configuration diagram (jpeg file)
Complete .msq starter file (Megasquirt II config file) 2.886 .ini file 03-08-09
Revised 03-08-09 - MSII Rev 2.886, updated MSQ file, advance table - improvements to startup, accel and warmup. NOTE! The injector Required Fuel setting has been changed for these .vex files.

If you see something that needs correction let me know and I'll post a revised file on my server. Enjoy!
Mike

Last edited by mppickett; 03-12-2009 at 02:55 PM..
Old 04-25-2006, 06:19 PM
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Mike,
Congratulations and thanks for posting!
Any dyno charts around?
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Old 04-26-2006, 04:06 AM
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very cool. I wonder if those VE tables would be close for my MS on my 3.0 turbo
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Old 04-26-2006, 04:56 AM
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Mike, how did you configure the dual EDIS? Do you have two EDIS control modules firing 4 EDIS coil packs with MS providing the signal to the EDIS control modeles? Also, what type of pulley did you use or did you weld up the crank trigger to your old pulley?
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Old 04-26-2006, 05:22 AM
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John, I haven't taken it to the dyno yet. When I do I'll post the results. MB911, the VE table would probably be close enough to get you started and idling (don't forget to set your particular "Required Fuel" setting under the Settings/Injection Control menu based on the injectors you are using and your displacement). If you are using a wide band O2 sensor you can see pretty quickly if the VE cells need to be adjusted.
Old 04-26-2006, 05:29 AM
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Megasquirt power

Nice one Mike, got any pics of your setup. Also what is the edis setup, 2 x 6 ? who made your leads? your help would be appreciated

Brett
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Old 04-26-2006, 05:47 AM
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Yes, please more EDIS twin-plug info. A wiring diagram would be gold...
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Old 04-26-2006, 12:54 PM
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Re: Megasquirt power

Thanks guys. I uploaded a configuration & wiring diagram (edited the one you started JohnJL!) and the wiring documentation file I made for my car (some may be a bit non-standard but it may be useful).

I'm using 1 VR sensor driving 2 EDIS controllers driving 2 EDIS6 coils. The pulley is from goingsuperfast.com. I bought my magnacor wires and the used EDIS sensor, ignitors/controllers and coils from Boost Engineering.

Here are some pictures:


Fabbing mount for VR sensor:



VR sensor installed (Note, the top wire in this configuration is gray at the sensor and connects to pin 5 on the controller which is sometimes a blue wire)


Long shot of coils and controllers installed on firewall and Megasquirt relay board installed on rear fuse/relay panel:

EDIS6 coil mounted on firewall:

Megasquirt relay board on fuse/relay panel:


Fabbing adapter for throttle position sensor:




Last edited by mppickett; 04-26-2006 at 01:06 PM..
Old 04-26-2006, 12:57 PM
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Thanks Mike,

You are the first person I've seen that has done EDIS dual plug with megasquirt. I'm happy its worked out for you. It seems like a great and cost-effective way to do dual plug.
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Old 04-26-2006, 02:03 PM
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Nice install! Very clean! Looking forward to hearing your results!

Doug
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Old 04-26-2006, 03:03 PM
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Great job, and thanks for posting the pics! I am uber-impressed!
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1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 04-27-2006, 02:52 AM
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Ha! I forgot I even made that diagram!

It looks like your edits to the diagram only show supression on one ground connection. Did you install on all, none, or just that one?
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2007 911 Turbo - Not a toy
1985 911 Cab - Wife's toy
1982 911 3.2 Indiash Rot Track Supercharged track toy
1978 911 3.0 Lichtbau toy "Gretchen"
1971 911 Targa S backroad toy
Old 04-27-2006, 02:56 AM
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I just installed one of the capacitors. I actually had two of them (one came with each of the coils), but thought I'd try it with one and see how it did (so far it works great).
Mike
Old 04-27-2006, 03:01 AM
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Nice megasquirt set up

Hi Mike, thanks for sharing those files. Images are also very helpful. I have a couple of questions for you, as I am trying to use a similar setup on a NA 3.2. Are you only using FI (ICV) or do you have an auxillary air valve for warm up also? So the Bosch ICV works for FI control with Megasquirt V3 MII.
thanks
Brett
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Old 04-27-2006, 10:20 AM
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Hi Brett,

I just went ahead wired up the Bosch valve as an on-off solenoid using the FIdle setup with Megasquirt. Here's the circuit I used (sorry, don't remember who originally drew this):


I suspect you could fairly easily set it up as a PWM controller (with finer adjustments than the on/off FIdle approach), but I haven't needed/tried it yet (my car likes warm weather so far).

Mike
Old 04-27-2006, 03:56 PM
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Thanks for posting.

Great job, will continue to follow for updates and dyno runs!
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Old 04-27-2006, 05:38 PM
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Mike,
Where are you located in NC? I'm interested in seeing your car and learning more about your Megasquirt setup and will dyno it for free if you are near Asheville.
-Brock
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Old 05-02-2006, 07:10 PM
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Mike which 36-1 tooth ring did you use??
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Old 05-02-2006, 07:36 PM
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hi mike, have you got any idea of cost for this setup so far? just the megasquirt plus coils and other efi stuff, not your engine work.
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Old 05-02-2006, 10:13 PM
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1980 SC soon to be big hp 3.3t powered 73RSR Replica (well, I'm keeping the engine but everything else is going )
Old 05-03-2006, 10:45 AM
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