OC43AMG

I just ordered a new ECU to keep as a bone stock spare unit.

Any how, upon looking at the parts for C400/C43(C450)/E43 all of them seem to share the same turbos and ECU.

The ECU/ECM Part No#. 2769007500
Turbos Part No#. 2760901580

Also the same ECU/ECM in the GLE550e and S550e


How does Benz create a power difference is both the turbos and ECU are the same?

Gungaslow

OC43AMG

"More aggressive Tuning of the ECU program"

How is that possible if the part number is the same? Does the ECU need to be reprogrammed by the dealer with a different tune to work?

dguth

That's very interested as everything I've read from Mercedes and journal publications states that the turbos are bigger in the E43. I wonder if any of the internal components are different.

dguth

I also found this turbo for sale on ebay for the E43. It appears the part number is different than what you posted above. 2760900300

https://m.ebay.com/itm/MERCEDES-OEM-...32?_mwBanner=1

OC43AMG

If you read that description it says it is also for the C450 AMG V6 biturbo.

I think thats just an alternative part number.

Founds this:
Part number:A2760900300 A2760900400
applications:
Motorcode M276 DE30 LA
Mercedes C-Klasse W204:C400 , C450 , C43 AMG
Mercedes E-Klasse W213:E320 , E400 , E43 AMG
Mercedes GLC-Klasse W253 :GLC 43 AMG

OC43AMG

Part number: A 276 090 04 00 AL 0076 Q03
Right side
PETROL ENGINE - M276 DE30 LA
Fits to:
--------------------------------------------------------------
2996 cm³, 200 kW (272 PS) 5000/min, 400 Nm 1300–4500/min

E 320 C/A207 seit 2014
R 320 V251 seit 2014

--------------------------------------------------------------
2996 cm³, 245 kW (333 PS) 5250–6000/min, 480 Nm 1600–4000/min

ML 400 / GLE 400 W166 seit 2015
GL 400 / GLS 400 X166 seit 2015
C 400 W/S205 seit 2014
E 400 C/A207 2013-2014
E 400 W/S212 2013-2014
S500 PLUG-IN HYBRID V222 seit 2014
SL 400 R231 seit 2014
R 400 V251 seit 2014
GLE 400 Coupé C292 seit 2015

--------------------------------------------------------------
2996 cm³, 270 kW (367 PS) 5500–6000/min, 520 Nm 2000–4200/min

C 450AMG / C43AMG (ab2016) W/S205 seit 2015
Mercedes-AMG C 43 Coupé C205 ab 2016
Mercedes-AMG GLC 43 4MATIC X253 ab 2016
GLE 450 AMG W166 seit 2015
GLE 450 AMG Coupé C292 seit 2015
S 400 4MATIC Coupé C217 seit 2015
Mercedes-AMG SLC 43 R172 ab 2016

--------------------------------------------------------------
2996 cm³, 295 kW (401 PS) 6100/min, 520 Nm 2500–5000/min

Mercedes-AMG E43 4MATIC W/S ab 2016
--------------------------------------------------------------
Retail Price :
€ 2 489


C- E- R- ML- GLE- GL- GLS- S- SL- GLC- SLC-

IHI Turbo A2760900400 / 2760900400 / A 276 090 04 00 / AL 0076 Q03

OC43AMG

After digging in further it seems the E43 does have a different turbo.

E43 AMG part number is 2760900300 (Left) 2760900400 (Right)
C43 AMG Part Number is 2760901580 (Left) 276090328080 Right

dguth

That would match up with what's being advertised. Still curious to know what's really different between them. Thanks for digging further.

OC43AMG

Here are the best comparative photos of the two that i can dig up. It looks like the snail is a little big bigger on the E43.

munis

18bora

Doesn't a new/different ECU need to be adapted to your car's anti-theft settings before you can use it?

OC43AMG

I dont know but that would make sense. I am emailing Jerry and Philip at EC to see if they can SCN code my new ECU when it arrives. This would prevent any down time as my C43 is my daily driver and family car. Or i will just have to have it coded at the local dealer.

Narry

The BMS Stage1 tune works between them.

18bora

He just sold his JB1

munis

sean1.8t

So each ECU is individually coded to it's vehicle?

I've had this hypothetical scenario i've been thinking about (but I figured it probably wouldn't work due to MB preventing it with something like what you mentioned) where if it would be possible to swap ECUs from car to car. Say I was wanting to put my car back to stock and instead of sending my ECU back to OE-Tuning to remove their tune, could I find someone with an identical ECU that is stock and swap them? My car goes back to stock and they get a tune. I know it's a long shot, but possible in any way?

OC43AMG

That is exactly what i wanted. 2 ECUs. One for modding and one stock. Its faster to swap out than a wiring harness or sending out the ECU for a reflash. However, i cancelled my ECU order because it seemed more of a hassle finding a SCN coder.

munis

I always wanted two stock ECUs at hand as according to my recent experience with Mercedes, it is the safest way of tuning these new AMGs if you do not have any tuner close to you. So I started looking into this a little bit. This is very much possible, it is just there are some technicalities.

Our cars have an immobilizer as a separate control unit, so when the ECU is installed for the first time and SCN coded to the car, the ECU locks to that particular immobilizer within the first 15 minutes of installation. Once this is done, the only way you can unlock these ECUs is by virginizing it. Virginizing the ECU in normal terms means wiping the hard drive, and it is done by installing something that is called the virginizing file. Virginizing files have not been made yet for our ECUs, at least not to my knowledge. So your only option is to buy a brand new ECU from Mercedes. Now Mercedes Parts Dept. in general will sell you a brand new ECU, but would not install (SCN Code) it to your car without taking back your original ECU in return, as Mercedes classifies the ECU as a TRP (Theft Related Part), and their corporate guideline states that a customer can never have 2 units of the same TRP (except your key FOB).

So your only option is to buy the ECU from a parts department and then go to a third party SCN coder to get it installed to your car. Then you will have two separate units of ECU both linked to your car and should technically work.

sean1.8t

Okay, so it is possible, but not a simple swap.

Who has these SCN coders? Most any shop or only shops that specialize in MB work?

How much is an ECU anyways? I'd guess they aren't cheap.

OC43AMG

Sean, if you can find a SCN coder ECS tuning had a sale for our ECU for only $800 with free shipping. They can often be found for sub $1k online from a benz parts dealer.

ItalianJoe1

As a dealer tech, I don't see why you couldn't order an ECU and have it programmed and keep it as a spare, but in general, yes they assume you will only do that if yours is damaged. The parts and service guys tend to shy away from ordering TRP stuff without a good reason, even something simple like a key (*all new keys are blank until programmed on the new cars, assuming you still have at least one original working, and it's still a hassle to order them).

If there's anyone local in Miami area, i'd be happy to do the initial startup of your new ECU, and i'm sure you could order one from one of our parts guys.

OC43AMG

Can you code one remotely with just a VIN? I am in Cali.

ItalianJoe1

Nope. Has to be connected to the actual car it's going it, it gets VIN locked and it's automatic. I can't tell it that it's for xxxxxx VIN and code it like that, that would enable us to bypass the theft prevention system quite easily, which they are trying to avoid.

sean1.8t

So are all c450 and c43 ECU's the same and interchangeable? A 450 ECU can be used in a 43 and vise versa or no?

By the sound of it, if a person can line up a shop that can SCN code, one can purchase an ECU and have it as a backup correct?

Now, could a person purchase my [OE-Tuned] ECU and have it SCN coded to their car(given that the ECU is comparable to their car of course)?