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Hello fellas. Im interested on a 2015 E400 that I looked up online. How reliable is the 3.0-litre twin-turbo M276 V6 petrol engine? and does it respond well with mods?
Very reliable as tuned. but i would use the stronger built e43. It has slightly larger turbos resulting in noticeable lack of off idle throttle response and more power above 4000 rpm. Yet, I drive the E450 for this reason: “ You buy horse power, but you drive torque.”
This being said, if chipping the engine i definitely would go with the e43. Internal modifications to the oiling system and use of forged pistons are longevity mods done by the factory, not sure if injectors are larger or not (see a parts catalogue). As an aside, the Aston Martin DP214 could have won LeMans in 1963, but both cars broke their cast pistons, a time induced shortcut rued to this day. Besides, with the E43 you get a much more sophisticated awd system.
A factor amateur tuners do not consider is, over time, there can be sensor drift of mass flow sensors and injectors are run at higher flow rates nearer their maximums.Tuning a road car turbo motor for higher output will narrow this drift window. This makes detonation a possibility at some later date if using “Stage 3” tuning. For this reason i recommend just use a modest Stage one setup. Recall that true racing engines are always monitored by professionals. It is somewhat analogous to flying an airplane in the coffin corner, at high altitude, at maximum engine output where the difference in your airspeed and stalling out of the sky may only be 30-40 nts less…some do it all the time, but any glitches can be a problem. In this case a huge repair bill. Both you and the prudent pilot ought to leave some meaningful margin for error.
W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
Originally Posted by Mike__S
Very reliable as tuned. but i would use the stronger built e43. It has slightly larger turbos resulting in noticeable lack of off idle throttle response and more power above 4000 rpm. Yet, I drive the E450 for this reason: “ You buy horse power, but you drive torque.”
This being said, if chipping the engine i definitely would go with the e43. Internal modifications to the oiling system and use of forged pistons are longevity mods done by the factory, not sure if injectors are larger or not (see a parts catalogue). As an aside, the Aston Martin DP214 could have won LeMans in 1963, but both cars broke their cast pistons, a time induced shortcut rued to this day. Besides, with the E43 you get a much more sophisticated awd system.
A factor amateur tuners do not consider is, over time, there can be sensor drift of mass flow sensors and injectors are run at higher flow rates nearer their maximums.Tuning a road car turbo motor for higher output will narrow this drift window. This makes detonation a possibility at some later date if using “Stage 3” tuning. For this reason i recommend just use a modest Stage one setup. Recall that true racing engines are always monitored by professionals. It is somewhat analogous to flying an airplane in the coffin corner, at high altitude, at maximum engine output where the difference in your airspeed and stalling out of the sky may only be 30-40 nts less…some do it all the time, but any glitches can be a problem. In this case a huge repair bill. Both you and the prudent pilot ought to leave some meaningful margin for error.
just my two cents
Can you provide part numbers for the turbos, forged pistons and diagrams of the oiling system changes? Such information has been impossible to find both on forums and as mentioned on several tuner's webpages regarding the differences between the 400/450/43 engines. The Turbos were the first ones that were assumed to be different between the two, but evidence has been hard to come by.
If someone has a 2019 or newer EPC, maybe it can shed some light on internal component differences between the 328HP to 396HP of the 3.0 turbo
Based on 2018 EPC , new suggested piston P/N of my E400 engine is the same as W213 E43 which is supposedly 396HP as per Car & Driver https://www.caranddriver.com/mercedes-amg/e43-2018
Con-Rod been the same. Cylinder head new P/N for E400 is the same with E43 and so are the camshafts. E400
E43
Turbo is different P/N, you can see the special power upgrade code. E400 is M014 vs the E43 M016. Data card will show this. E400
E43
Injector P/N is different, make sense, E43 need to inject more fuel E400
E43
Have a look at the zip file I attached if you want a better view
If someone has a 2019 or newer EPC, maybe it can shed some light on internal component differences between the 328HP to 396HP of the 3.0 turbo
Based on 2018 EPC , new suggested piston P/N of my E400 engine is the same as W213 E43 which is supposedly 396HP as per Car & Driver https://www.caranddriver.com/mercedes-amg/e43-2018
Con-Rod been the same. Cylinder head new P/N for E400 is the same with E43 and so are the camshafts. E400
E43
Turbo is different P/N, you can see the special power upgrade code. E400 is M014 vs the E43 M016. Data card will show this. E400
E43
Injector P/N is different, make sense, E43 need to inject more fuel E400
E43
Have a look at the zip file I attached if you want a better view
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