Tom. M

Cool..then maybe we can retrofit that to mine

Fabio421

Colin, did you document anything during the MS install on the widebody?

Lizard928

Fabio,

what information would you like on that car?

I'm afraid that the owner ended up backing out of the knock sensors, which really BLOWS because its now in my shop to add a turbo onto it and it would be REALLY nice to have a knock sensor system installed.
I have almost completed the harness to convert my car to VEMS.

But the problem with taking pictures and documenting everything is that it increases the time 10 fold. And if you have a friend man the camera, they keep asking questions and slow things down further...

Southpa928

I have the 86' 32v 928. Considering doing what you did with the stand alone system. Do you have any Pics of the set up?

Lizard928

I don't have any remaining pictures of this setup.

I am now running VEMS on my own car (VEMS.hu)
And am running MS on a local 4.7L, and another with an 87 engine.
I've also converted Sean (justaguy on here) track car over the VEMS as well.

U-928

Which MS were you running lizard and why did you remove it for the vems?

Lizard928

I was running MSII V3.0, I actually sold it

The VEMS is on another one of my cars. I prefer it over the MS box. It has less glitches. The code seems to be much better, the hardware is vastly better, it has built in dual knock control, built in EGT targetting, and a number of other nice features.

BC

But have you tried the new MSIII box from DIY Autotune? Seems more fully baked.

Lizard928

The MSIII is just an adaption board to the MSII, unless you go to the MS Pro.
The MS Pro is a much better built board, and I have not tried it yet.

For MSII/MSIII they still are using inferior connectors, and the board really isn't anything to write home about.

Currect MSIII Pro costs are $1200 with the wiring harness which is needed. On top of this you do need a WB O2 controller, and sensor ($200 Innovate Digital MTX-L).

The cost for the same amount of components from VEMS is $873.86. You do still need a LSU4 sensor which is $70. However this setup has built in EGT connection, dual knock control, and enough outputs to control everything you could ever ask for (boost control, knock control, traction control, etc.)

The cost for MSIII (not pro) is, $744.00, again it requires a WB O2 controller for $200.

None of these prices include injector connectors, or ignition setups/adaptions. Whenever I do an install I go with a distributorless ignition system to get the maximum efficiency out of the engine. On 32V engines I go COP, on 16V cars, coil pack or CNP.

BC

I am going to be putting the Microsquirt with the ignition mod (to run 8 ignition coils - 4x2) on the "Rat motor" in my other thread. I may need your help to make it run.

atb

I'll be wiring up the MS 3.57 in the next month or so. I had the knock sensor board added when the box was built. I'm running Ford EDIS coil packs.

bshaw

Reviving a long dead thread - Colin, would you mind sharing the spark map you are using? I'm converting from the GM '749 to MS now. The '749s are just too old now, they keep failing on me in different ways.

btw - the blue 928 with the yellow stripe & LT1 throttle body noted earlier in this thread is mine.

RossSullivan

Thanks for the tutorial, bought a 80’ 4.7 with Megasquirtx3 common rail injectors and cop coils. I’m trying to suck up as much info as possible. I read all the posts and it’s not that difficult a job to install, actually sounds like an awesome project, the part that scares the crap outa me is the program itself, I find it overly complicated and it’s possible to change the wrong box and have your pistons meet your valves and not in a good way. Thanks again.

Ad0911

I am in the process of converting my '78 to EFI. This is what I did or have to do:
- TPS installation on ex-L-jet TB
- airpressure/temperature sensor in plenum
- engine temperature sensor in waterbridge
- Lambda sensor in exhaust (to do list)
- triggerwheel on pulley (I skipped the airpump / fan belt in favour of an electric fan with controller)
- injectors in L-jet intakes (make the intakes to fit the injectors)
- install secondary air valve (I removed the air plate from an old CIS air metering body)
- make fuel rails
- connect fuel rails and install fuel pressure regulator (to do list)
- install computer in interior and make a cable routing through the bulkhead (to do list - any favorite spot?)

I was lucky enough to buy the intakes and TB from a very dear friend in Belgium (Barry) whom you all know for his carburetted ralley car. I am forever in his debt for the generosity!
Here are some pictures of the process.