W202AMG

So i was pretty close with the numbers guess, but that isnt comparing a stock E55 tune though, unless thats what he had on there first, it doesnt say what the first run was with.

KJI3jflarryfe93

owner of that c43 in the youtube video recommended to stick with stock c43 ecu not touching the ecu

this is what owner writes:

Dyno run of C55 (C43 with 5.4l motor swap) with ECU flash. ECU tune was a performance E55 (w210) tune. This tune caused the A/F to drop from around 14:1 to around 12:1. This caused a peak HP loss of about 4.5 rwhp and a max torque loss of about 17. Temps were roughly the same as the last time the car was on the dyno.

On 6/11/11 - max power was 284.72 rwhp and 309.89 torque
On 5/27/12 - max power was 280.22 rwhp and 292.50 torque

So, do not consider a E55 performance tune for your ECU (assuming you have done this swap). Now the decision is if we should re-flash with a stock E55 tune or go with a Unichip piggy back ecu and tune it ourselves.

drop in the A/R ratio must be worse right?

W202AMG

Yeah mate i read it between comments above, but i get the impression the performance tune he refered to is some sort of "off the shelf" or "generic semi custom" tune, which is not really a good thing to be flashing into any car.

I fixed a fair few Corvettes with simular "custom tunes", and what first exposed the generic nature of it to me was when i had a second person contact me in a week complaining about "tune X made my Corvette run poorly" and for some reason i thought to have a look at the VIN, initially to confirm year model so i knew setup, but it was a 1995 Camaro VIN, no big deal in the grand scheme of things, same PCM used, but looking back at the one id done earlier in the week, again, a 1995 Camaro VIN, and the exact same VIN as the other guy... Also the exact same tune in every other way... The tuner ( insert respected known tuner name here ) was simply sending out the same file to everyone that had stock or mild mods. Both cars were Corvettes, a 1994 and a 1995. One guy still had his original file, so i used that and after a few backs and forwards it was tuned faily well, the other guy did not have his original file, so i built a tune for him using my own file as a starting point.

I dont expect this to be an issue with later model Mercs, but yeah, it shows how lazy some big name "tuners" were when it came to generic off the shelf tunes... They didnt even start with the correct .bin file from the destination car...

That said, a generic off the shelf tune may or may not work well or be better than stock tune, but neither will match a proper live dyno tune, or at the very least a tune done using some form of data logging.

cm60k

Hey guys,

To shorten that up,

No any gain & Really waste if go with 5.4l ECU/E-prom file, cause C43 has ME2.0 with the same timing setup with 5.4l file..!,

have to keep Green (217cc) injectors, cause ECU got limitation ROM file to save the differ displacement,

you can go with Beige (283cc), but that requires to calibrate it after the limitation saved in the ECU file,

you should not use Beige (283cc) immid. after swapping, ECU will not recognize the much sprayed, and O2 sensors will surprise about the differ mixture, O2 sensor will send the Error back signals to the ECU..?!!?,,

7% rich vs 16% lean

-;ZAYED;-

KJI3jflarryfe93

with green injectors and ME2.0 you will stay within C43/E55 specs on Eprom datafile?
rich vs lean mixture will stay within specs programmed in the stock factory C43 ECU paired with green injectors not causing any problems?

cm60k

Yeah, with C43/E55 ME2.0, Green injectors will be perfect,,

but in case of upgrading fuel/air trim, can go with Beige with refile the ECU/Prom..!

-;ZAYED;-

KJI3jflarryfe93

that's great news Zayed doing an engine swap using green injectors and the ME2.0 is pritty much a risk free modification not damaging cats

cm60k

Exactly..

W202AMG

Funny how many times you can tell some people, yet he will ask again in the future

KJI3jflarryfe93

haven't taken my vitamins for a long time, getting blank memory lately.
when i totally fogget something i have to ask again to refresh my memory.
maybe this is a pre-stage for total memory loss i dunno?

W202AMG

Could be mate

Ive seen you ask a lot of the same questions over and over again on here!

Sometimes i know clarification is not the best with some questions on some forums, hence why i took the time to explain a few points in more detail for you, but if you ask enough times someone will come along and give you the answer you want to hear!

KJI3jflarryfe93

i'm dead serious like an art attack, been foggetting stuff lately.
ran out of meds recently, sometimes i can't remember certain things that happened a few hrs ago.

i will have to refresh my memory from time to time getting back to my control freak

mickey13

Kowalski? do they have this for you?

KJI3jflarryfe93

i think this can is only sold in the USA?
might add phantom horse powers to my car?

DRBC43AMG

Snake power
Kowalski if you memory is sometimes muddled, guess you should read and clear the codes in your top ECU

KJI3jflarryfe93

top ECU is getting fooked from time to time
veggie prices in grocery stores has been very steep in eürope this winter, this means low on vitamins ***** my top ECU

mickey13

Lol. I don't think it will fix a broken MAF but if your MAF has some dirt on the element because airbox not seated correctly or was not sealed in plastic/box while it sat on the shelf in your garage then its good to clean off dust/dirt from electrical sensor/connector.

Pulled the MAF off my car and the inside of the sensor actually had black dirt that came off on my finger. Motor was probably sitting for 2 years before installed on my car. I replaced it with a spare I had but the car doesn't run as smooth. I disassembled the entire MAF/elbow/rubber seats and cleaned everything real nice. used the spray on the electrical sensor and going to put it on now. Hopefully it will be smooth again. the spare off my 4.3 works but just a bit rough idle. will keep it around for testing in the future if i need it.

W202AMG

Give the intake a good blast out with Liqui-moly intake decarb, itll clean up the valve seats and combustion chambers at the same time, which is a good thing.

Run it for around a thousand miles and run the intake cleaner again, then throw some Liqui-moly engine detox into the oil while hot, let it idle for 10 minutes as per instructions, drain oil replace with correct filter, and fill with Mobil 1 in either 5w40 or 5w50 depending on your climate. I use 5w50 in Australia, but it is autumn here and 38°c today.

This should get the engine internals pretty clean, and clean engines run nicer.