s430 to 5.4 engine
you wouldnt want a s55 ecu because that will expect an ABC suspension setup to be in place anyway.
since your labor is free , try it. youve got nothing to lose but your labor.
if it doesnt work put the 4.3 back in and resell the 5.4 motor to somoene else. you might even make money selling it

I would say you can keep your existing ME ECU but I see the main issue in the coding of the ME.
With the newer cars this can only be done with Stardiagnosis and SCN codes provided MB VeDoc factory database.
So unless you cannot manipulate VeDoc to get the correct SCN codes or you have a kind of SCN code generator you will probably fail.
Using the ECU from the donator car will also be difficult because all the other anti theft related units wont accept this ME and you cannot start the car..
Keep me posted..
Frank
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I would say you can keep your existing ME ECU but I see the main issue in the coding of the ME.
With the newer cars this can only be done with Stardiagnosis and SCN codes provided MB VeDoc factory database.
So unless you cannot manipulate VeDoc to get the correct SCN codes or you have a kind of SCN code generator you will probably fail.
Using the ECU from the donator car will also be difficult because all the other anti theft related units wont accept this ME and you cannot start the car..
Keep me posted..
Frank
The Best of Mercedes & AMG
here is an update though from what i have gauged so far.
1. the airflow meter, knock sensor, crank sensor, fuel filter, trans filter, oxygen sensors are all the same prt numbers.
2. the fuel injectors are not
3. this leads me to believe that i will not need the wires and can continue to use mine without swapping from my old engine to the new one.
4. i know the transmissions are diff, although same prt numbers for the filter, do you guys believe that the housing is the same though?
the stock tranny on the s430, s500 is practically the same as the supercharged s55. its rated to handle 590lbs/tq.
if you decided to drop in a supercharged 55 engine then your best bet would be to just get rid of your s430 and upgrade to an s55 since they can be had in the low 20K range.
the stock tranny on the s430, s500 is practically the same as the supercharged s55. its rated to handle 590lbs/tq.
if you decided to drop in a supercharged 55 engine then your best bet would be to just get rid of your s430 and upgrade to an s55 since they can be had in the low 20K range.
the stock tranny on the s430, s500 is practically the same as the supercharged s55. its rated to handle 590lbs/tq.
if you decided to drop in a supercharged 55 engine then your best bet would be to just get rid of your s430 and upgrade to an s55 since they can be had in the low 20K range.
Can you share the parts needed for this. Most have said the S430 ECU will work with the engine as the C43 to C55 have succeeded. What else do you need to consider? Any bugs and little issues at all?









