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944 DME Project


ORIGINAL: barks944

Main benefits to it are getting rid of the dizz cap. I think a pretty good solution is using the coil pack from a golf. Just need some kind of mounting hardware to put it where the dizzy used to go, size permitting. Need to get to the scrappers and get hold of one to try it.
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If its a Mk 3 coil pack use something else for they are notoriously (and I mean notoriously) unreliable.

I run a standard coil and the original trigger on my MK3 ABF engined Mk 1 for the reasons above.
 
A lot of us megasquirters use either a ford edis coil or 90's peugeot coil when running wasted spark. The ford leads are clipped on so you may need to make / get made some ht leads. A quick rummage around some megasquirt sites should show you a few tried & tested options.
 
I'm confused by both those units as they are described as 'low current positive trigger'. That would suggest to me that they are triggered by a 5v input. Most wasted spark coilpacks are earth triggered. I guess it depends what trigger you use from the ecu, COP, wasted, earth, 12v or 5v trigger.
 
Worth noting that your not stuck with ignition systems with built in amplifiers, you can just use a dedicated coil amplifier like they use on the S2. So you can use pretty much any setup with 5V low current outputs.
 
http://www.youtube.com/watch?v=PBE76Ugn-E8

After several days on the simulator I have made some really significant progress. Really pleased with the ignition and injector strategies now, the system calculates and responds to changes in fuel and ignition demand every stroke of the engine now. This is really essential with MAP as the manifold pressure rises so much quicker without the air flow meter present.
 
Funnily enough I searched out this thread last night and was wondering what was going on :)
Would this work on the S2? If you need a tester, I wouldn't mind :D
 
ORIGINAL: Alexw

Funnily enough I searched out this thread last night and was wondering what was going on :)
Would this work on the S2? If you need a tester, I wouldn't mind :D
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I took an S2 dme apart last night and its quite a bit different to the lux DME. Different enough that the board I have made for this project would not fit into the S2. However with the right information and effort the same could be achieved for the S2 for sure. Might have to buy one and give it a go, I do like the idea of 3.0 litres in a 944 :).
 
Finally it seems all this hard work has paid off. Got the car setup and did about 20 miles of driving and map tweaking last night. The car went really really well, I am so pleased with it. I've only got my own 944's to compare it against but the improvement is really notable. The engine feels so much more responsive and connected to the right foot, even though its only been roughly mapped with a butt dyno and wideband sensor the engine feels really alive. Dare I say it seems eager, not something myself or my father have experience from any of our 944's, its close to my brothers Clio Cup now. Low down torque is still very good, not really pushed it up in the rev range yet, done a few runs though and it seems to have plenty of puff. Can't wait to see what a professional mapper with a dyno can do for it.
 
I know that Tom is reluctant to blow his own trumpet here, but Im happy to do it.

http://www.augmentautomotive.co.uk/
 
Barks, may I respectfully suggest you continue development of the 2.5L cars with the turbo following the n/a engine - asap

[:)]

and do not allow the S2 market to enter your development plans until 2013[8|]

I am interested too.

George
944t
 
Oh don't worry about that, my turbo engine is rebuilt now and I'm just having the rust on my car dealt with and some painting done then the engine will be going back in with GPF's old turbo.
 
I will be nominating this thread for "PCGB TOTY" once I see a 951 with your ECU in operation! [:)]

Remind me - it has close loop knock control available?

George
951

 
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