My complete project site on converting K-Jetronic to MegaSquirt. Including photos, fuel rail construction, injector selection and fitting etc...

http://www.hitechengineering.net/DNN/MegaSquirted450slc/tabid/54/Default.aspx

1980 450slc running MegaSquirt. I enjoy talking about my project if anyone has any questions.

Cheers,
Mike.

Is the car stock besides megasquirt? what is the benefits over CIS?

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual

EFI > Jetronic

Being mostly mechanical, the CIS system isn't particularly sophisticated in terms of operation. Keeping it running smoothly depends on a lot of temp sensors and parts (air fuel distrib, cold start valve, idle air speed controller, vaccum lines . . ) all working together.

Nice project.
Did you use the mercedes TPS? Didnt see anything about on your build page.
Nice shop too BTW.
I want a 25X40 in my backyard....but the city will not let me build it.

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LS190
190e with 5.7L aluminum V8
LS190 runs!

Nice to see you posting about it over here now!

Has there been much progress since you last updated over on BenzWorld? The last I saw any info was about October last year.

Have you gotten any mileage numbers since you did the conversion? I saw a little bit of discussion about possible improvements, but noone has posted anything about it since the speculation.

Related to your project documentation on the site, have you refined the maps enough that you feel comfortable sharing them? There is a link for the maps in your site's sidebar, but it just has a placeholder page currently.


Thanks for any info, I'm avidly reading anything others care to say about the MS conversions, prior to converting my SEC soon.

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...

The car is stock other than MegaSquirt and a MSD6a ignition. My CIS injection was running really lousy and the best I could get out of the Mercedes shops was "Let's play the parts swap game" on my nickle. That was my main motivation for the conversion.

MegaSquirt is ALMOST immune to the vacuum leak problems that plagued my K-Jetronic system. Replacement parts for the MegaSquirt system are a very small fraction of the $ for CIS parts. I also know how MegaSquirt works so I can work on my fuel system myself.

I need to add a section on my TPS solution to my website. I mounted a Ford Lever arm TPS under the relay board and I am just running a piece of wire between the TPS and the accelerator linkage above the throttle body. It is a very quick easy setup that is working very well. Before I added the Ford TPS I had her running quite well with no TPS at all. The stock Mercedes TPS was just a couple on-off switches so it was not appropriate for MegaSquirt.

Josh,

Not too much progress. To tell the truth I am in the middle of a divorce which has kept me preoccupied. I have updated to the latest code and I did finish the air intake. I am quite happy with how the intake and filter are working. Right now I have a leak on the rear fuel rail hose that I manufactured myself. I need to replace this hose which will be pretty easy.

Thank you for mentioning the maps. I will get the latest ones linked in and then post here. I am happy with the way it runs but I do have a very slight deceleration's stumble on a rare occasion which I haven't caught in a log yet. I wouldn't count on the maps as a finished product but they should be a good starting point for someone. Gas mileage is just slightly better than before but my foot is many pounds heaver and the smile on my face is MUCH bigger. I haven't had a chance to take her on an extended road trip yet to check highway mileage.

I have straightened up the engine bay quite a bit but I still have to put the passenger side seat back in and reassemble the dash and footwell.

I have also installed one of the Unwired Technologies electronic AC servo replacements which made the car a lot easier to drive in the winter and still be able to see out the front window. I need to mount this new servo and shorten the vacuum lines on it to make a nice looking install.

Thank you guys for you interest and thanks for looking!
-Mike

hey i really appreciate the update, when i first read through your build i could have sworn you were crazy or had some super natural power cause i couldnt find what you were using for the tps, sounds like it helps, cant wait to see how its connected.

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I too would like to see how that works out.
I'm now setting out to get the engine in mine running on the CIS just to prove to myself that it will run, before ripping it out and installing the MegaSquirt I have about 80% ready for a new home.

Heh, when I started reading this thread, I didn't even have a gasser MB, now I'm looking to join the club!

Thanks for all the info you've all shared, and happy wrenching to all!

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...

Nice.

Now to replace the LH in some M119 cars . . .

:-) neil