Well, after much trial and effort we have finalized the initial stage of our project!
Unfortunately we do it with mixed results, as many of you know my initial goal was to perform this conversion while utilizing the factory ECU. with hopes of producing “big” horsepower .After combing the four corners of the earth and speaking to everyone who is someone they all confirmed what we feared. The factory ECU is indeed our Achilles heel, developed by Siemens as an “active coded” system the ECU itself actively decodes coded software held within the EPROM. Making simple flashing virtually impossible unless done by 1 of 3 gurus capable of this, 2 of which are in Germany. Oh and yes reprogramming could be done for a mere $4500.00!! under the table by someone inside A_G.

Be that as it may, we then looked at other viable alternatives and decided to use supplemental injectors and map computer to provide fuel above and beyond what the factory system could deliver. We further calculated that because the car was previously supercharged, we would be safe with respect to ignition timing. Sounds good eh? Not quite, fuel remained a problem in that the factory ECU would fault into limp mode and not allow more than 9lbs of boost. Keep in mind that with our turbo charged system we are producing a significant increase in air volume over the factory set up. To make a long story short I contacted my friends at Active Autowerke(premier BMW Tuners), turns out that many of the models they provide systems for suffer from the same problem. They developed some 2 years ago an electronic device that alters the signal output from the mass air and provides the ECU with a voltage value just below that which sends the system into limp mode.

With that accomplished we felt comfortable that our supplemental injector system would provide the fuel needed when going into greater boost. Again not quite, when we designed and fabricated our injector system we concluded that 2 injectors would do it, largely do to space and simplicity. After dyno testing the car we now realize that 2 injectors are not sufficient, because of both quantity and location. Additionally the C230 uses a return-less fuel system along with a static pump neither of which are satisfactory for the level of fuel requirement we now have. What I decided was to tune the car within the parameters that our injectors and stock fuel system will allow and see where we are.

Currently the car is running 12psi of boost and produces 256hp and 264lbs of torque at the wheel which equates to about 300Hp and 308lbs of torque at the flywheel. The car runs perfectly drivability is unaffected, due to the fact that we are running the factory electronics and supplementation occurs only under boost levels above 9psi. The car pulls very nicely in 3rd and 4th gear however; first gear is a bit too short for the power the car now has. My intentions are to drive the car for a while as it is and now focus on wheels,brakes and suspension before moving on. At this point I must consider standalone if I am too pursue the HP numbers I originally intended.

Also here are a couple if pix!

 

Holy!!!!!!!!!!! Nice Job!!!!

 

Thats awsome~ Can we get some Video or some sound clip??? please

 

Seeing as there is already a twin turbo supercharged SLK in Germany I cant quite come to terms with the need for trial and error unless you really enjoy that sort of thing.

 

Woah, that's AWESOME! What year is it? More specifically, is it the 2.3 or 1.8L?

And, how much will it cost?!?

 

Talk about some serious power. Either engine, your car is really making a lot of stresed power. What kinda temps are you looking at? Reliability?

 

Does the engine cover, where it says "KOMPRESSOR", come stock in black color?
I think mine is red

 

dude, WOW!! that look really clean under the engine bay! i'm very impressed! now is this a one off project? or do you plan on introducing it into the market in some way?

 

man, that is hella cool... so much for my great ideas, someone beat me to it. not that i have the commitment to completely dismantle my car's induction like that

 

DAMMMMMMMMM!!!!!!!!!!! looks mean as hell

 

U FINALLY DID IT....nice job

 

Some vids for us will be GREAT.

 

I must apologize, many of you are not familiar with my projects undertaking some 9 months ago. I am relativly new to MBWORLD and my primary dialog has been with the folks over at www.mbklasse.com.. Thank you all for the positive comments and I will attempt to answer as many of your questions as possible.


1. I will be providing more pictures and some video once I complete some visual enhancements I am working on.

2.The car is a 2002 2.3ltr Motor, I am currently putting together some figures for a "kit" assembly for a few individuals who have expressed interest.

3.The engine maintains stock tempatures however, the ambient engine bay tempature is aprox 20 degrees above stock, this is due to the fact that I currently am not utilizing header or turbo thermal wrap. These are scheduled to be installed in 2 weeks which should bring the engine bay tempatures back down to stock levels.

4. The car is very,very reliable. Remember none of the factory electronics have been removed the cars drivability is as stock. Also we have not yet further dyno'd the car and turned up the boost we are currently running only 12psi.

5.Various components under the hood have been both Powder Coated and Jet Coated, this includes the valve cover plate which was Powder Coated black.


Regards,
Speedwerx

 

Wow... a twin turbo SLK in german... and a single turbo C coupe in the states... to enumerate the possible differences between the two could take days... you might have more to comes to terms with then you know.

Should've just been like drag and drop right speedwerx?

If the timeline doesn't hint to the project complexity, you don't deserve to post on the forums! Soeedwerx project is awesome, and that it succeeded is almost as impressive as the mere undertaking itself.

 

Cool, I never go on mbklasse, but I did see something funny when I checked it out today... It appears that our buddy that got banned is on mbklasse. You guys remember that "pilot" from rico... :p

 

Any plans for the 1.8l engine?
I'll be down in Ft Lauderdale on the 5th with the Audiclub (doing a charity event at Speed Indoor Racing) Would it be possible to see the car that weekend?

Thanks,

Scott

 

That happens to be my birthday weekend and I'm not sure what my wife has planned, however if you'd like to PM me with a cell number I can perhaps give you a call if all seems clear.

-Speedwerx

 

oh my!... i am truly in love with it!! how much horses???

 

300HP on a coupe? Thats insane! I want it bad...but I doubt it will be cheap. With all the extra money to put on...maybe I can get a C55..no? Or an not too old C32 at least? But yeah a turbo C class is pretty amazing, nice job there!

 

Now thats a pretty engine compartment.... nice clean job

 

Both C55 and C32 have slushboxes, what fun is that?

 

I would have to agree, I would imagine the fun factor with both the C55 and C32 is not quite that of what I now have. Being the Eurpoean car nut that I am, my original intent was to produce a German counterpart to the Japanese laidend Sport Compact field. Of course all while trying to maintain the prestige and heritage within the badge

-Speedwerx

 

i never knew he got banned, no wonder i dont see him posting anymore. is it ok for me to ask why he got banned?

 

wow, dual Forced induction

 

What a clean setup and great HP figures!!! To bad it doesn't come in Kit form. Wonder if the 2.3 will hold up with that much boost? My experience with Miatas tells me that they can take up to 11 lbs of boost without taking away reliability and they don't come with any boost from the factory like the Kompreesor. Will the 2.3 take it??