M278 to M157 turbos and AMG fuel pumps?




FYI - I swapped in a fuel pump control module from an M157 car and it totally stopped the low fuel pressure/"whump whump whump" at startup.. Same controller physically, but programmed to operate the pump correctly. The M278 controller probably doesn't give enough voltage to achieve correct pressure right away.




FYI - I swapped in a fuel pump control module from an M157 car and it totally stopped the low fuel pressure/"whump whump whump" at startup.. Same controller physically, but programmed to operate the pump correctly. The M278 controller probably doesn't give enough voltage to achieve correct pressure right away.
@Siegmann Hi! That's awesome news man! I think you are the first guy ever to crack this case and solve it!! Wow!
Can you share more info about that here? If you don't want to do it in this Topic please PM me. Im tired to use the key and pump the fuel pressure up before stars to not make any codes.I know that some M157 cars use the same fuel pump controller with M278. But E and CLS63 models don't. (For that I know off)
M278 Fuel pump controller 000 900 70 07 Continental, or VDO Siemens
M157 Fuel pump controller000 900 35 00 Helbako (total different wiring for this one, comparing to that Continental) I have bought this and try to figure install like year back, but couldn't do it.
Last edited by PekkaH; Jan 1, 2023 at 03:42 PM. Reason: more info
Can you share more info about that here? If you don't want to do it in this Topic please PM me. Im tired to use the key and pump the fuel pressure up before stars to not make any codes.I know that some M157 cars use the same fuel pump controller with M278. But E and CLS63 models don't. (For that I know off)
M278 Fuel pump controller 000 900 70 07 Continental, or VDO Siemens
M157 Fuel pump controller000 900 35 00 Helbako (total different wiring for this one, comparing to that Continental) I have bought this and try to figure install like year back, but couldn't do it.
Same housing and connections as the original module, but with the magic programming to match the pump 🙂
I was having the usual issues with the pump swap and also started to get long-crank starts when the weather cooled off (ethanol blend). It's really great to have that fixed. I have to wonder, too, if the full output potential of the pump is realized without the proper controller...
Some others who may be interested: @squantum1 @mishorar




Same housing and connections as the original module, but with the magic programming to match the pump 🙂
I was having the usual issues with the pump swap and also started to get long-crank starts when the weather cooled off (ethanol blend). It's really great to have that fixed. I have to wonder, too, if the full output potential of the pump is realized without the proper controller...
Some others who may be interested: @squantum1 @mishorar
Yes that could be also problem that the pump haven't run like it should with wrong controller. Maybe there are going to be issues in my car when I install that proper controller, because my car is tuned with that M278 controller paired with M157 fuel pump. Will see what happens..
What wiring did you use between controller and M157 pump? Did you use the same wiring system on this new controller also like Gardevski and what I have use? Cut the brown wire if I remember correct.
Last edited by PekkaH; Jan 2, 2023 at 04:38 AM.
Yes that could be also problem that the pump haven't run like it should with wrong controller. Maybe there are going to be issues in my car when I install that proper controller, because my car is tuned with that M278 controller paired with M157 fuel pump. Will see what happens..
What wiring did you use between controller and M157 pump? Did you use the same wiring system on this new controller also like Gardevski and what I have use? Cut the brown wire if I remember correct.




I think that the part number is not so relevant here, but the right program inside the module sure is.

bellow is a list of the modules that interchange with this part
SKU: 000-900-62-07-80
Positions: Rear
Replaces: 000-900-01-04, 000-900-04-03, 000-900-17-04, 000-900-18-03, 000-900-43-01, 000-900-60-00, 000-900-61-00, 000-900-62-07, 000-900-73-06
@Siegmann What do you think?
Last edited by PekkaH; Jan 4, 2023 at 09:56 AM.
I think that the part number is not so relevant here, but the right program inside the module sure is.

bellow is a list of the modules that interchange with this part
SKU: 000-900-62-07-80
Positions: Rear
Replaces: 000-900-01-04, 000-900-04-03, 000-900-17-04, 000-900-18-03, 000-900-43-01, 000-900-60-00, 000-900-61-00, 000-900-62-07, 000-900-73-06
@Siegmann What do you think?
The Best of Mercedes & AMG




( driver and gasoline weight not included in my calculation) and 1/4 mile Dragy trap speed. Engine power estimate was near same that Gardevski did dyno on his car (723hp). These calculators gave me 739hp crank engine power. My best Dragy 60-130mph on last summer was 7,59s
so that 739hp on engine could be possible in my case. That 60-130mph 7,59s time is quite good time with just pump gas on this car.
Here is two different calculator pictures:




I don't see any point there that 550 pump have changed on 15 or 16. I think still they are not that big Thant AMG pump and can't deliver enough fuel for M157 turbos if all power is maxed out with tune. Correct me if I'm wrong.
I just bought the CSF aux radiator for my 2014 CLS550 (car already has has split cooling from factory and aftermarket meth injection etc).
Aside from these three mounting pieces you posted (Heat exchanger hanger R 2125200841, Heat exchanger hanger A 2185010720, Heat exchanger Frame plastic/rubber A 2125001416) What hoses did you need to buy? How did you connect to OEM system?
Im assuming the mounting is difficult, but I am hoping you can lend me a hand with what hoses to buy and how to connect the next auxiliary radiator to the existing system.
Thanks & looking forward to following the rest of your build.
Kindly,
Alan




I just bought the CSF aux radiator for my 2014 CLS550 (car already has has split cooling from factory and aftermarket meth injection etc).
Aside from these three mounting pieces you posted (Heat exchanger hanger R 2125200841, Heat exchanger hanger A 2185010720, Heat exchanger Frame plastic/rubber A 2125001416) What hoses did you need to buy? How did you connect to OEM system?
Im assuming the mounting is difficult, but I am hoping you can lend me a hand with what hoses to buy and how to connect the next auxiliary radiator to the existing system.
Thanks & looking forward to following the rest of your build.
Kindly,
Alan
You need also some plastic curves to get the extra hoses to fit together.I recommend you to upgrade your Bosch 010 ic pump to CWA 100-2 in same time when you add the extra HE. Also I recommend you to wire the IC pump to run all the time and add a switch to it. These all help a lot intake cooling. You can see in my build thread pictures and hyperlinks where to buy the pump and right connector and how I did my CWA100-2 install etc. Also there are some pics where you can see the extra he connections. CWA100-2 pump is the same pump that Renntech sells for stupid price..
Hope this helps.




Will the OEM ML550 pump supply enough fuel for maxed out stock turbos running an E40 blend?
I also have methanol injection and all the other usually goodies like intakes, catless exhaust and so on
Will the OEM ML550 pump supply enough fuel for maxed out stock turbos running an E40 blend?
I also have methanol injection and all the other usually goodies like intakes, catless exhaust and so on
https://mbworld.org/forums/cls-coupe...ml#post7230208
If you haven't read that whole thread yet, it's a must-see.
E40 is fine with the stock low pressure fuel pump, assuming it's still running at good efficiency and without issues.
I can't say the same is true for the sedans, but at least on the 2013 ML550 AND THE ML63 bot share the same exact components as per EPC. The guy in Germany confirmed what I found and we coded it in like 2 minutes.
Last edited by Wes1311; Mar 15, 2023 at 10:57 PM.
You need also some plastic curves to get the extra hoses to fit together.I recommend you to upgrade your Bosch 010 ic pump to CWA 100-2 in same time when you add the extra HE. Also I recommend you to wire the IC pump to run all the time and add a switch to it. These all help a lot intake cooling. You can see in my build thread pictures and hyperlinks where to buy the pump and right connector and how I did my CWA100-2 install etc. Also there are some pics where you can see the extra he connections. CWA100-2 pump is the same pump that Renntech sells for stupid price..
Hope this helps.
So When wiring this CWA100-2 to run all the time, why is a switch needed ? the ECU no longer turns the pump on or off ? Sorry im a bit late the the game here and have been reading a lot, but im missing a few bits of information. Im new to the MB world, Im a porsche guy, but after buying a 16' E550 sedan i think I've fallen in love with Merc lol


