C43 '55' swap thread




You can have better cams and what not but if its not tuned right you might not be using all the motors potential.
There really arent many(if any) dyno results to prove how a c43 with a 5.4 puts the power down with a stock ecu....
I have no idea how much power my car is putting down right now. I havent seen a dyno from a c43 with a 2002 ml55 motor.
It should be between 340-360 at the motor and up to 370-380tq
My euro C43 does not have this round black pump installed as my car only has 2x o2 sensors.
My question is ONLY for you who don't have this pump on your engine which means your car has less poluting restrictions than other market cars.
# Do intake manifold gasket differ between engines fitted with a smog pump and engines NOT fitted with this smog pump?
The partsnumber I have found for an intake manifold gasket is A113 141 09 80.
# What engine has this gasket fitted, the smog engine or non smog engine
# A113 141 09 80 manifold gasket is it the same partsnumber for left/right side fittings?
You can see the attached picture where this pump is installed.
Last edited by KJI3jflarryfe93; Aug 6, 2015 at 08:19 AM.




if Engine comes with Smog pump & Shut-off valves, the gaskets should comes different,
gaskets are the same for both sides,,
*gaskets with Smog pump & Shut-off valves(with holes), #: "113 141 09 80"
*gaskets without Smog pump & Shut-off valves(without holes), #: "113 141 13 80"

ZAYED,,
if Engine comes with Smog pump & Shut-off valves, the gaskets should comes different,
gaskets are the same for both sides,,
*gaskets with Smog pump & Shut-off valves(with holes), #: "113 141 09 80"
Attachment 311785
*gaskets without Smog pump & Shut-off valves(without holes), #: "113 141 13 80"
Attachment 311786
ZAYED,,

do you have the smogpump on your car?
maybe you have euro specifications?
The Best of Mercedes & AMG
You can have better cams and what not but if its not tuned right you might not be using all the motors potential.
There really arent many(if any) dyno results to prove how a c43 with a 5.4 puts the power down with a stock ecu....
I have no idea how much power my car is putting down right now. I havent seen a dyno from a c43 with a 2002 ml55 motor.
It should be between 340-360 at the motor and up to 370-380tq
He went back to the stock C43 ECU tune.
Also what tune is out there for our stock ecu with a 5.4 that would actually increase the figures?
Excuse my lack of knowledge on the subject
Last edited by PJmak; Jun 23, 2015 at 12:15 AM.




,until this moment; i didn't see any significant increase with HP/TQ with ECU tune, tried many tuners for C43/C43/55 swap, they gives foolish #s, with 0 gain or less than stock..!,
dyno is not always prove for increasing #s, advertising is the main POINT>!<
i think the better ECU/TCU tune just for models from 01, with ME2.8/EGS52..!!??!!
ZAYED,,
,until this moment; i didn't see any significant increase with HP/TQ with ECU tune, tried many tuners for C43/C43/55 swap, they gives foolish #s, with 0 gain or less than stock..!,
dyno is not always prove for increasing #s, advertising is the main POINT>!<
i think the better ECU/TCU tune just for models from 01, with ME2.8/EGS52..!!??!!
ZAYED,,
tuners will only take your money and probably give you nuthin' but sh-t!
The car pulls a lot nicer and it has a almost perfect throttle response. Its is very linear and fast compared to mine.
Im trying to figure out why my car lags every time i press the throttle.
I can press the pedal and wait a second or so before the car starts pulling. It has power but it lags. The throttle on my friends car is amazing. It always pulls no matter what rpm
Is it time for a new MAF or maybe throttle response sensor?
if you only drive her and NOT service her, she will eventually fail on you!
did you change the wear n tear parts?
plugs, maybe wires, MAF, maybe you have a vaccum leak somewhere, clogged fuelfilter etc etc?




I did my swap less than 5k ago and i did all the basic maintenance.
Im gonna swap mafs with my friend and see if it makes a difference
what's the correct RPM's?
is it 500 RPM - 750 or maybe 900 RPM's?
is it good if needle sometimes drops to 500 RPM's?
does RPM in stand still differ between stock C43 engine and after a 55 engine swap or is it still the same RPM's like the above numbers for both engines, stock vs engine swap?
how would you describe the characteristics between both engines?
is c43 engine mellow yellow and 55 engine is ferocius filled with short temper?
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