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Posted by: DNHunt Dec 5 2004, 08:34 PM

God what a mess. Wires and boards everywhere.


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Posted by: Aaron Cox Dec 5 2004, 08:35 PM

youre a glutton for punishment

Posted by: SirAndy Dec 5 2004, 08:36 PM

thanks, just the kind of picture i needed to get myself motivated for the MS-FI conversion of my engine ...

Andy

Posted by: DNHunt Dec 5 2004, 08:36 PM

Close up of the Megasquirt board with a few mods


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Posted by: Aaron Cox Dec 5 2004, 08:37 PM

whens it go on the car?

Posted by: DNHunt Dec 5 2004, 08:38 PM

O2 sensor, relay board and ECU


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Posted by: DNHunt Dec 5 2004, 08:41 PM

And a cleaned up wiring harness. Looks like the new firmware with ignition is gonna work. Preloaded MS with a nice rich fueling map and safe ignition map

Dave


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Posted by: chikenfajita Dec 5 2004, 08:54 PM

im interested in putting a MS into my 914. how long did it take you to make it and install it in the car?? looks pretty cool. what are the advantages of installing a ms in a 914

Posted by: SirAndy Dec 5 2004, 08:57 PM

adjustability ...

Posted by: Aaron Cox Dec 5 2004, 09:19 PM

headaches up front...smiles when you drive.....

Posted by: crash914 Dec 6 2004, 06:50 AM

Actually its not too bad to build and install...

I spent about 3 days building the MS board and stimulator. I would work about 2 hours at a time then put it aside for the day...I am not an electronics builder, but got better at soldering...I also built a WB02 kit during this same week.

The Megasquirt is much easier than the WB02. Although I did contribute to the build sheet for the Wb02..I had a kit with the RJ45 wires landed to to the wrong pins...tech support helped get it corrected.

All these kits are easy to order and have great web support.

You can go as far as you want. quick and dirty( me) or top drawer classy...the choice is yours.

I ran my megasquirt with my stock D jet motor first. I used pigtails for the injectors, connected power and tach. Thats it... I used the existing ECU to control the fuel pump, no TPS, no CHT, no cold start. It works...

Now that I have my new motor, I have added all that stuff. The TPS works well and with megatune, you can see the enrichment. The cold start works well also.

You do need to spend some time tuning with megatune. It is a learning experience. You will make mistakes with the fuel map and other settings. Best thing is that a kid can tune while you drive...its easy!

Go for it. for the investment of ~300, I have learned a lot about engine controls and tuning..its an investment in knowledge..

good luck, herb

Posted by: DNHunt Dec 6 2004, 10:30 AM

Actually it's not as bad as it looks. It's really just a case of keeping everything straight.

The original build took about a weekend. Wiring took quite a while and tuning took a couple of months. For that I got a really nice fuel injection system that ran well for 18 months. The only problem I had was with the cylinder head temperature sensor and warmup enrichment.

The mess at the top is because I'm adding a distributorless ignition. I had the MS working on a stimulator and was doing some pretuning. I set up a nice rich fueling map and a real conserative ignition map as places to start tuning from. Changes to the board took me abot 3 hours. Reworking the wiring harness took a couple of days. I should be ready to install everything this coming weekend. Hopefully nothing will be crossed.

Dave

Posted by: jkeyzer Dec 6 2004, 10:40 AM

What mods did you make to the MS? Just the ignition or other things?

Do you have any issues with dust building up inside the box because of that fan? Given that the 914 is a convertible it is semi exposed to the elements inside.

Posted by: DNHunt Dec 6 2004, 10:54 AM

Jeff

I did the EDIS ignition mod last weekend. I ran it off of LED 17.

When I originally built the thing I took the MAP sensor off the board and mounted it in the relay board box in the engine compartment so I wouldn't have a really long vacuum line. I just swiped 3 leads off the DB37 cable that were originally grounds and dedicated them to the MAP. Then I used jumpers on the boards.

Dust hasn't been a problem with the ECU in the center console. The relay board gets dirty as hell in the engine compartment.

Also I switched back to the AAR instead of a fast idle solenoid. The fast idle solenoid is all or nothing and a pain in the butt.

Dave

Posted by: rhodyguy Dec 6 2004, 11:44 AM

ha ha. you moved into the kitchen.

kevin

Posted by: DNHunt Dec 6 2004, 12:58 PM

Yep, Wife said it was time to do something together. She got see me work and I got to see her cook. Not just on the stove either. 914 tokens are disappearing faster than quarters in a slot machine. We need a steamin smilie.

Dave