i was thinking about buying this:
http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

is this the megasquirtII that goes ignition as well?

 

No.

 

The MS as shown can be reconfigured to provide advance signals to a distributor-based electronic ignition, or the Ford EDIS distributorless ignition. I'm running the EDIS option on my 13b. If interested, there's more details at the link below:

http://www.msefi.com/viewtopic.php?t=2637

This is obviously not a plug-n-play affair, but I'm quite happy with the end results.

 

I'm doing this soon. Within the month most likely.

 

renns: could you possibly post some pics of your EDIS setup? Thanks.

 

I demand pics

 

OK, I see I've missed replying... Here's a little background.

EDIS is Ford's distributorless ignition system, used in early-mid 90's on 4, 6, and 8-cylinder engines, firing twin-post coils in wasted-spark mode. The EDIS module receives crank angle data from a VR sensor interfaced with a 36-tooth wheel, with one missing tooth used for TDC reference. These modules are very slick, in that they decode the 36-1 wheel, provide smart coil charging for two or more coils (no external ignitors needed), and many offer multi-spark mode at low rpm. They will run the ignition at fixed timing with no extra computer control required. To adjust timing, an appropriate advance signal is sent to the module, so a single wire from the Megasquirt to the EDIS module is all that's needed for fully programmable spark control. To enable EDIS functionality, one of the embedded code versions supporting EDIS must be loaded flashed to the MS.

The EDIS4 module (4-cylinder) fires each of its two coils once per revolution, with 180 degree phase separation. This just so happens to match the ignition requirements of the rotary. So...rather than firing wasted spark coils, I used two single-post coils (from disassembled FC trailing coil packs), each firing one leading plug. The result is one coil per plug, direct fire, crank-triggered. No distributor or CAS required.

For trailing plugs, I simply connected a second EDIS4 module in parallel with the first, firing two more single-post coils. At the present time, I am running them together, ie zero split. I ran that way for several thousand miles this past summer with no problems. If split timing was desired, the second EDIS4 module could be triggered from a second VR sensor at some fixed angular displacement from the first. The resulting timing split would be obviously be fixed. A second option that could be pursued is to modify the MS program to provide different advance signals for leading and trailing. I've not the time or interest to pursue either of these options at the moment, as I'm not convinved the payoff is significant enough for my application.

This setup is in my SA. I fabricated a mounting plate to carry the ignition components. This plate is mounted to the strut tower, resulting in short (~10") plug wires for each plug. An attached pic shows this mounting plate with the four coils, two EDIS modules (black boxes with 'Motorcraft' label) and fusebox. The Megasquirt is mounted up under the dash on the passenger's side. Also attached are pictures of the VR sensor, and the toothed wheel (modified outer rim of pulley). Note the simple sensor mounting via the engine mount studs on the front case in 1st gen applications. For 2nd gen cars, something else would be needed.

This is NOT a plug-n-play setup, but it is achievable at very low cost for those interested in the true 'diy' approach. There is more information on using the Megasquirt with rotaries here.