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-   -   EFI for m117? (http://www.peachparts.com/shopforum/mercedes-benz-performance-paddock/225264-efi-m117.html)

FLYNAVY 06-17-2008 02:18 AM

EFI for m117?
 
I'm getting closer to the point where I plan on swapping out the CIS in my 190e 5.6 (like after I get it running and break the rebuilt motor in) for full EFI and just thought I'd post over here and see what you experts think. I know at least one other m117 has been EFI'd over on benzworld....possibly megasquirt (?). Basically I would like to pull as much power as possible from the motor in n/a form, and obviously customize the power delivery to the car. Having not done this before, I'm just wondering what system you think would be best, and what things I need to obtain aside from just the computer itself. My thoughts right now are either Haltech or TEC3, as it sounds like those offer a little edge over the megasquirt (though somewhat more expensive). Thoughts???

omegabenz 06-17-2008 03:12 AM

FLY, I told you to do this about a year ago if I remember right. I bet some 190E owners have some serious envy going on regarding your ride. That project is really starting to take shape.

On MB world, dig through S500R's posts regarding his supertouring 500E which he is converting to stand alone fuel management.

I've been thinking EFI for my M117 as well, but it hasn't been high on my priority list, but I am intersted in anything you figure out, and I think it is a great idea. I think that EFI would be good for at least 50 horsepower over the CIS especially with the 5.6 that you have or the 6.0 that I have.

FLYNAVY 06-17-2008 11:42 AM

haha....yeah, I wasn't in disagreement w/ you omega, just needed to get things running before embarking on another stage of the project :D

I think it will absolutely unleash some useable ponies, and most importantly allow us to optimize the power delivery from such compromized OEM specs.

I'll keep you updated on what I find.

FLYNAVY 06-17-2008 12:19 PM

So although S 500 R's project is amazing I can't really find anything that he has posted about EFI. You wouldn't happen to have a link would you?

hey_allen 06-17-2008 04:11 PM

Try looking at the "best you can do for your car" thread here on this board, as well as OughtSix's thread about the same.

I've collected all the parts other than a little hose required to convert my 500SEC to EFI (going with MegaSquirt), and will be documenting all that I've done when I get started on the actual conversion.

As far as mileage goes, I'm not sure how I did it, but the last tank through my SEC was highway mileage, and averaged 19.3 over 360 miles. Odometer was verified over 20 miles against the mile markers, just due to thinking it was running a little off, but proved to be accurate.
None the less, I'm hoping for improvement with EFI installed and tuned.

omegabenz 06-17-2008 04:39 PM

Quote:

Originally Posted by FLYNAVY (Post 1886485)
So although S 500 R's project is amazing I can't really find anything that he has posted about EFI. You wouldn't happen to have a link would you?

PM him about it. He mentioned it really breifly. Maybe he can give you more details. He told me he would post more about it when he gets to that stage.

FLYNAVY 06-17-2008 06:23 PM

Quote:

Originally Posted by hey_allen (Post 1886704)
Try looking at the "best you can do for your car" thread here on this board, as well as OughtSix's thread about the same.

I've collected all the parts other than a little hose required to convert my 500SEC to EFI (going with MegaSquirt), and will be documenting all that I've done when I get started on the actual conversion.

As far as mileage goes, I'm not sure how I did it, but the last tank through my SEC was highway mileage, and averaged 19.3 over 360 miles. Odometer was verified over 20 miles against the mile markers, just due to thinking it was running a little off, but proved to be accurate.
None the less, I'm hoping for improvement with EFI installed and tuned.

Who said anything about mileage? ;)

Cool, I'll look forward to seeing your updates!

@ Omega....thanks, I'll do that

omegabenz 06-17-2008 06:34 PM

Try this website too. At home I have more info on the S500R project. I will email you all I know.

http://www.sdsefi.com/

PUMPISH 06-17-2008 06:46 PM

what kind of spark do you wanna run?
Wasted spark with 2pcs 2x2 coils or do you wanna keep you distributor?

Next time I go to Robbans city and visit him maybe I can build a mould of his fuelrails and triggerwheel and let you know about that

FLYNAVY 06-17-2008 10:54 PM

Quote:

Originally Posted by PUMPISH (Post 1886817)
what kind of spark do you wanna run?
Wasted spark with 2pcs 2x2 coils or do you wanna keep you distributor?

Next time I go to Robbans city and visit him maybe I can build a mould of his fuelrails and triggerwheel and let you know about that

What do you recommend for naturally aspirated street use Pumpish? I know you are really the resident expert here on CIS--->EFI :cool:

PUMPISH 06-18-2008 10:26 AM

Quote:

Originally Posted by FLYNAVY (Post 1887038)
What do you recommend for naturally aspirated street use Pumpish? I know you are really the resident expert here on CIS--->EFI :cool:


Wasted spark is more modern and better, specially at higher RPM.
V8 wasted spark contains 4 coils whats mean that it is has 4 times more time to charge and discharge each coil between the sparkfiring.
At the same time you never need to buy a new distributor or rotor every time you will make a service ;)

But it cost about 320 euro extra

FLYNAVY 06-18-2008 12:43 PM

Quote:

Originally Posted by PUMPISH (Post 1887330)
Wasted spark is more modern and better, specially at higher RPM.
V8 wasted spark contains 4 coils whats mean that it is has 4 times more time to charge and discharge each coil between the sparkfiring.
At the same time you never need to buy a new distributor or rotor every time you will make a service ;)

But it cost about 320 euro extra

So this will be sort of like the coil packs I have on my m113 then? What is the best thing to do to plug the distributer shaft hole on the block when you do this?

PUMPISH 06-20-2008 10:42 AM

Quote:

Originally Posted by FLYNAVY (Post 1887486)
So this will be sort of like the coil packs I have on my m113 then? What is the best thing to do to plug the distributer shaft hole on the block when you do this?


No its not realy the same coil pack. It is 2 of like this type:

http://d7161524.u110.foretag.surftow...oil%20stor.JPG

To plug distributor you can use aluminum plate like this:

http://archive.pixbox.se/arkivet/syn...0/20764728.jpg

You cn find more EFI parts here
http://www.turbobandit.com/gpage10.html

pesho 06-20-2008 05:06 PM

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

This was posted here earlier and should help you as the intakes of the 450 and m117 are very similar, this guy is using mustang 5.0 19# injectors.. here is another link that talks about injector sizes etc..

http://www.rceng.com/technical.aspx

Good luck with this I've been thinking about doing this to my '91 560sec for a while.. waiting for my fuel distributor distributor or some other expensive CIS part to crap out.

Your 190 build is BAd ass man congrats.

FLYNAVY 06-20-2008 06:16 PM

Thanks guys, yeah this will definitely be a little bit down the road, but its never too early to start planning and collecting all the items I will need.


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