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Maybe emission rules were introduced after W202, 208 etc in Australia, NZ/Aus has same market and never seen emission parts in this era of MB,however I learn new things every day here
Definitely no Paul,
ECU counting the Ratio through TCU via speed sensor signal in the ESP module and the RPM sensor in conductor plate,
that's why MB Expand the file in (ME2.8 & ME2.8.1), and deliver the signals through ECM module,,
so many countries that has strict Environment rule NOT that care about GAS/Petrol vehicles, they focus more & more on Diesel vehicles,,
that's one of the reason that MB doesn't equipped Emission components in their differ models, unless if those countries demand it in their vehicles..!!
Since we are talking modules, do you know why MB update the 00 C43 ESP with module 029 545 72 32? reason is this module has different engine bay side harness plug and updated pump(pump looks same) so this module cannot be plugged in.. , rest of ESP system is same 99/00.
My 99 C43 had 025 545 61 32 and 00 CLk55 had 029 545 70 32 module, both these have same plugs... so why change it for 00 C43 and not 00 clk55??
Maybe it is not necessary to change to this ESP but maybe it is better?, ..why MB.. why
"025 545 61 32" is an old #, that has a narrow GB capacity, MB replace it to "70 32" & "72 32", to accommodate with update ABS pressure through the BM140 pump pressure sensor,,
any "W202/W208/W210" with last version of 6/00 M2.0 or ME2.8 or ME2.8.1, it should come with "70 32" & "72 32", during to the update pressure at ABS pump..!!
Some time back I asked Fabian(kaype)about this, he said he had changed the pressure sensor when he updated his esp but now I understand why!, maybe there is also internal changes in the pump as well?
Such weird thing that 70 32(from 00 clk55 but not shown in epc) and 72 32(from 00 C43) has different 48 pin plug..., both use same pump
72 32 is used in 00 clk55 also(my donor 00 clk55 came with 70 32 but has updated pump) so can only assume some very early 00 clk55 had 70 32 that is not shown in epc.
70 32 used in upto 99 C43, then 72 32 in 00 C43, but epc doesnt show the engine side harness updates to change plugs ;
This plug harness is different on late M2.0, but can't assure that, cause MB put differ plugs on even M111, it's depend to the harness & ESP system spec.,
my friend's C43 has "72 32" with "70 32" plug..!!
that's the main reason that can't always counting on VIN # on EPC..!?!?!
I tried 00 C43 ECM/EIS/steering lock with 70 32 ESP...unfortunately esp doesn't work because it brings up "CAN bus faulty",it seems EIS from 00 C43 does not recognize 70 32 so only option if want to run this ECM is 72 32 esp be installed along with harness(maybe pump too) from 00 C43...
I took it for a drive with the ECM coded to CLK55 and with esp in "F" condition, it felt a little slower than my clk55 ecu,also sounded not as loud!?!...because I was using 00 C43 ecu on 5.4 I reset the adaptions, I wonder if having no esp would cause some torque limiting?, or if resetting the adaptions could pull back timing for a while???..
Damn epc!... I guess it keeps things interesting for us
Do you know if maps are changed when coding is changed from C43 to CLK55 in ME2.0?... or if when ECM is ordered at factory that only "one" map is loaded based on VIN?.. and coding only sets up for other parts of the system?
I am still not sure why MB updates ECM for 202 C55, Maybe there is some small differences...it makes me think that early ME2.0 ECM comes from factory based on VIN rather than SDS coding!.. because my 99 C43 ECM doesn't accept coding from 00 C43 ECM
Also, I forgot to record my 99 ECM coding because I thought it was in epc,one day I need someone to read there 98/99 with SDS!, because I don't use this ECM its ok for now.
From comparing many codes in epc it "looks" like 073 014 058 CLK55 code means; 073 being CLk type, 014 being transmission and catalyst type , 058 being amg maps for 202/208 V8. however I am only guessing
00 C43 is 003 005 058
E55 is 002 005 057 - this code is accepted in my 99 C43 ECM, but of course gives CAN fault due W210 wiring differences.
Also,to compare with 00 C43 ECM I reset "boot strapping" adaptions on clk55 ECM, now I have slow throttle response on this ECU also...assuming need to drive it a lot now to re-learn
MB must change W202 C55 ECU, during to the differ diff. Ratio bearing file (2.82:1 VS 3.07:1), and differ MAF back signal (4.84v>>4.95v),
W202 98-99 ECU definitely will NOT accept W202 00, cause it has tiptronic shifter with ESM controller module,,
i'm not that sure about those coding's, but you're correct about "058/S99C" is an AMG E-prom data/file..
i think it's more better in "performance" if you keep C43 ECU map, with CLK55 swap, both got the same timing, but differ ignition angle & fuel range, which is NOT necessary to been adapted, it will be re-learn & saved in the E-prom file..!!
you should able to see the MAF voltage, the current will constantly NOT stable, cause the TB sensor will reads a differ RPM range, with re-learn condition,(IAT>>density>>fuel range at WOT)..!
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reason is this module has different engine bay side harness plug and updated pump(pump looks same) so this module cannot be plugged in..
, rest of ESP system is same 99/00.
