Uranium238

I'm not sure if this has been done by anyone or not; theoretically, it should be a straight swap to take an engine and ECU from an ML (with wiring harness and injectors), swap it into another M112 C, and you have an increase in power instantly.

However, I cannot confirm this. Has anyone attempted this project before? I would think a 3.7L from an ML350 would be just as compatible as a 3.2L from an ML350.

Uranium238

I checked on the Club202 forum with a knowledgable person. The engines will swap but without the wiring harness and ECU. The current ECU in the C280 would have to be recoded using the SDS / DAS software. At the same time, the proper engine variant code will need to be provided. Does anyone with SDS / DAS coding knowledge know about this on the board here?

Also, can this engine variant code be obtained offline with a Chinese cloned SDS?

cm60k

Why not swap the Engine only, then reprogram the ECU, to match the more value of displacement,,

is your C280 has the same model year of that ML350..??

ZAYED,,

Uranium238

Car is a 1999 and engine is a 2003.

Uranium238

You had mentioned the above quote in a different thread. Is it true and have you done the swap? It sounds like perfect upgrade now although I probably will use the ML350 intake, MAF and injectors rather than an M113's.

cm60k

Is your 99 C280 T/B got round plug or square plug..?

ZAYED,,

Uranium238

I don't know. The part number though is 112 141 00 25

EDIT - It is the round plug.

cm60k

00 25 should be the round plug, means you have ECU ME2.0 or M2.1,,

BTW; I didn't see any difference between M112 V6 intakes, even with 3.7l,

they are the same, as well as T/B & MAF,

3.7l using the same injectors with early M113, which is 197cc, while 3.2l using 181cc, not that significant diff.,

you can swap the 3.7l Engine & using the exist 3.2l wiring harness, the car will working,

but you will need to refile the ECU, to compromise with 3.7l....

ZAYED,,

Uranium238

I did some research and it looks like I have to use the M113 TB off an early ML430/E430/CLK430.

I do wonder though if the V8 TB bolts right up to the C280 intake manifold and that the intake matches the intake ports of the 3.7L. I don't think the bigger motors ports changed when compared to the 2.8L, but only the block's internals.

cm60k

Yes sure, M112 & M113 T/B's can be swappable, as well as MAF & injectors, but the KEY with ECU data/remap...

ZAYED,,

Uranium238

Can it be done without going to the dealer such as with a DAS off ebay?

cm60k

Dealer will NOT accept to do a sort of that upgrade, access coding/map thought DAS, need a good tuner to do it,

such as (E/C, OE tuning, speed driven, logic lab)...

ZAYED,,

Uranium238

Sadly, tuners are a little to come by in the SF Bay Area.

I wonder if this can be done with one of those Star SDS or DAS softwares off ebay, the Chinese clones?

cm60k

Unfortunately no, it's a little bit risky, to play with an ECU map,

i think you can do a remote tune with E/C, no need to send the ECU to them....

ZAYED,,

Uranium238

What is E/C? I'm used to tuning up 80's Porsches and the Mercedes from the 90s and early 2000's are a whole new language to me.

In the end, it seems easier to just swap in the long block and force the C280's ECU to adjust the air and fuel to the bigger bore. Both the 2.8L and 3.7L are 10:1. The ECU regonizes the compression, but as soon as the O2 sensors pick up a difference in ratios, it should adjust and adapt over time to the changes.

With regard to the fuel injectors, the C280's are 15 lbs/hr while the ML350 is 21 lbs/hr with the 3.2L ML320 engine using 19 lbs/hr. That is a big difference and will throw off ratios leaning toward running rich if the ECU is not calibrated for those higher flow rates.

Uranium238

Using an ML320 intake and injectors on this 3.7L swap is now starting to look more tempting. At least the factory ECU can technically compensate for the increase in flow rate to 19lbs but not 21lbs.

cm60k

*2.8l & 3.2l both using the same injectors, (17lbs = 178.7cc)

OEM #: "112 078 01 49"

Bosch #: "0280 156 014"

*3.7l using the same injectors with early M113, (18.75lbs = 197.1cc)

OEM #: "113 078 02 49"

Bosch #: "0280 156 016"

http://users.erols.com/srweiss/tableifc.htm

* all M112 sharing the same intake, (2.4l /2.8l /3.2l /3.7l), no any increase noticed with 3.7l...!!

ZAYED,,

cm60k

E/C is a Eurocharged performance, its good & active tuning company, they are one of great SPONSOR here,,

http://www.eurocharged.com/

ZAYED,,

Uranium238

Sadly they are too far from me.

cm60k

No need to go to them, you can do a Remote tuning...

ZAYED,,

Uranium238

Remote tuning?

cm60k

E/C provide a cable that you will able to contact with them Remotely online through "login me in",

E/C V1


E/C V2


ZAYED,,