M278 to M157 turbos and AMG fuel pumps?
I am going to do the Meth kit before I do the turbos. The engine is making 45% hp and 55% tq higher than stock. So there is quite a bit of heat. It's a good idea to either really upgrade your cooling system or install the Meth kit to avoid engine knock and further damage. I'd run the Meth at high boost so it will keep the engine temps pretty low. I've heard it will drop even up to 100F temp with Meth. The only way you'll mess up with Meth kit is if you didn't follow the installation instructions or cheap out on the kit. Also, if you have it tuned on Meth and you run out of Meth. I'm planning to get that kit sometime this year and use it for cooling effects only, no tune.




I am going to do the Meth kit before I do the turbos. The engine is making 45% hp and 55% tq higher than stock. So there is quite a bit of heat. It's a good idea to either really upgrade your cooling system or install the Meth kit to avoid engine knock and further damage. I'd run the Meth at high boost so it will keep the engine temps pretty low. I've heard it will drop even up to 100F temp with Meth. The only way you'll mess up with Meth kit is if you didn't follow the installation instructions or cheap out on the kit. Also, if you have it tuned on Meth and you run out of Meth. I'm planning to get that kit sometime this year and use it for cooling effects only, no tune.
I am going to do the Meth kit before I do the turbos. The engine is making 45% hp and 55% tq higher than stock. So there is quite a bit of heat. It's a good idea to either really upgrade your cooling system or install the Meth kit to avoid engine knock and further damage. I'd run the Meth at high boost so it will keep the engine temps pretty low. I've heard it will drop even up to 100F temp with Meth. The only way you'll mess up with Meth kit is if you didn't follow the installation instructions or cheap out on the kit. Also, if you have it tuned on Meth and you run out of Meth. I'm planning to get that kit sometime this year and use it for cooling effects only, no tune.
im thinking i do that. Throw a turbo blanket on it and charge tubes for the methanol at the same time. All from the front
Also, where exactly would the Meth injector be installed? Before turbo or after the turbo placement?
Also, where exactly would the Meth injector be installed? Before turbo or after the turbo placement?
Talked to VRP a bit yesterday. You can just unbolt the turbo from manifold (if the bolts haven't seized). I'm asking about doing some DIY videos for the install.
Talked to VRP a bit yesterday. You can just unbolt the turbo from manifold (if the bolts haven't seized). I'm asking about doing some DIY videos for the install.
So I just took another look at the BOV pipes and meth kit combo from VRP, yes, the meth injectors go right before the pipes connect to the engine. So after the turbo. I take it that those welded spots are where the meth injectors go.
I highly believe you can DIY the meth kit by following the instructions. I need to do some research on the BOV and if it is really necessary since it's kinda expensive for me haha.




How much hp and tq are you thinking you might get with the M157 turbos?
Forgive me if you have already mentioned, but do you currently have Stage 1 or 2 ECU tune?
The Best of Mercedes & AMG
The guys running 10's with an M278 is definitely running a ****-ton of methanol. Or he has a 5.5 block-swap or something. That car is too fast for what mods you guys said he had.
For the methanol kit with the ports in the tubes, post-turbo/pre-intercooler. This position will do nothing for the car in the way of making power, or even keeping it cooler. Unfortunately that causes puddling in the intercooler. Honestly, the best place for cooling with no tuning, is pre-turbo with a very fine, light mist(mix of meth/h2o is hotly debated). There is one of the AMG guys who run it with great results and he does a really good job explaining it as well. Here is his thread: https://mbworld.org/forums/w212-amg/...orks-m157.html
IAC's: All M278 cars have an intercooler in the intake(rather, just before the intake), and a radiator(heat exchanger) in the right side behind the bumper, to help cool the water after it leaves the intercooler. You can upgrade your stock cover with the Alpha one, or there are some cheaper ones, that are basically double the size of the stock one and replace it, fitting in the stock location. Some cars in 2012 have the "split-cooling" system as it was added in late 2012, mine does not. My car is pretty highly modded and makes a lot of power, so I see higher temps when running boost(making hits, etc), but it comes down very quickly as my pump is wired to come on when ignition is on. Easy mod to help with higher IATs. Honestly, I think the pre-turbo meth system is the cure for all this, probably going to be my next project soon.
I have:
•Stage 3/SS(Secret Squirrel) Ecu Tune
•Tcu Tune
•3" Catless Downpipes/Exhaust
•I/C Pump on w/Ignition
•Homemade intake(working on this currently, will have more info soon. Having to make some changes before doing any more testing)
I run 3.1sec 0-60
11.39@122mph
All done on street(summer) tires
Estimated power: 665-675hp & over 750tq???
Let me know if you have any questions I didn't address and I'll be happy to so.
Scott




Engine mount L : A212 240 61 17 Q1
Engine mount R: A212 240 62 17 Q1
Transmission mount/bearing: A 204 240 06 18
Two Turbo manifold gaskets: A 278 142 04 80 and A 278 142 05 80
Two Turbo to bridge pipe gaskets: A 278 142 03 80 and A 278 142 02 80
Also all oil and waterline seals and rings:
Two MA 278 181 06 80
Five MA 027 997 06 45
Three A 027 997 06 45
Two A 023 997 45 45 64
Two MA 023 997 46 45 64
Two MA 020 997 95 45
Two A 278 181 05 80
A hell expensive list include turbo work, but yes Merc hobby is an expensive game

Engine is going out and AMG turbos and stuff in 29.3.
Hope in 26.4 car is going custom tuned and also TCU tune then. My tuner in Finland have now TCU tuned some AMG Mercedes with good results.
My tuner is also working with wiring diagrams so maybe we can get those M157 fuel pumps working full properly like they should and no compromises there.
Last edited by PekkaH; Jan 22, 2021 at 01:09 PM.




And 30.3 will be custom ECU and TCU tune session on dyno and road.Still some work on to get full understanding what is the difference in original and AMG fuel pump wiring to get that AMG pump work full like it should. On Monday CLS is going to car electrician, lets see what he can solve then. I have now PDF format on original fuel pump and fuel pump controller wiring and also on AMG.
And 30.3 will be custom ECU and TCU tune session on dyno and road.Still some work on to get full understanding what is the difference in original and AMG fuel pump wiring to get that AMG pump work full like it should. On Monday CLS is going to car electrician, lets see what he can solve then. I have now PDF format on original fuel pump and fuel pump controller wiring and also on AMG.




The common problem is sometimes long starts and people with this fuel pump set up has suffer it on USA also. Sometimes it throw a code P008A. ( Low pressure fuel system pressure too low). Its like the fuel line pressure drops when car is not driven. I have sort this by turning the ignition key a few times on power (no starting) and I can hear when pump sometimes make the weird "tsunk tsunk" voices. It will sometimes do those "tsunk tsunks" when I open the door and motor is not running. When I do this key thing I havent get any codes anymore. Original fuel pump didn't ever make that kind of sounds.
I think the second problem is that when driving in cruising speeds like on highway etc. and put a little more gas the car (AMG pump) doesn't do it adequate and smooth like on original pump does. On full gas it seems to running fine.
I am still thinking about M157 turbo upgrade, but not yet. Am keeping an eye on this thread and others. So I appreciate you all jotting down the part numbers and all the other miscellaneous information for this build.
Good luck!!




I am still thinking about M157 turbo upgrade, but not yet. Am keeping an eye on this thread and others. So I appreciate you all jotting down the part numbers and all the other miscellaneous information for this build.
Good luck!!
It would be really nice to see the E85 gains on this platform. Looking forward to hear and see our results! Can you be sure that the tiny M278 pump can handle that kind off E85 sending without going to lean? My MY2008 Saab runs with E85 and fuel. So it would be more than nice if our cars could be flex fuel cars, so the ECU can adapt what ever mixture is in tank. For now I dot want to make some about 40% ethanol soup.
. Maybe that time will come
It would be really nice to see the E85 gains on this platform. Looking forward to hear and see our results! Can you be sure that the tiny M278 pump can handle that kind off E85 sending without going to lean? My MY2008 Saab runs with E85 and fuel. So it would be more than nice if our cars could be flex fuel cars, so the ECU can adapt what ever mixture is in tank. For now I dot want to make some about 40% ethanol soup.
. Maybe that time will come 




I went to the E85 pump today and the guy getting E85 for his BMW, said this pump has ~80% ethanol. So I did the calculation, based on 80% and I am running a total of E30-E35 with a mixture of 91 pump gas. My octane rating should be ~96-97. I added almost 7 gallons of E85 and 14 gallons of 91 gas.
I still have to dyno the car once I believe I'm at 40-50% ethanol. EC showed me dyno if 573whp with 50%.




Right side AMG E/CLS 63 S models Heat exchanger A0995003203
Heat exchanger hanger R 2125200841
Heat exchanger hanger A 2185010720
Heat exchanger Frame plastic/rubber A 2125001416
and water wetter
Last edited by PekkaH; May 30, 2021 at 02:49 PM. Reason: edit




My tuner did the TCU tune and some ECU base work for next time, suppose to be later in this summer when the condition are normal without that killer heat! We didn't want to kill the car on the dyno, because it will need several pulls. Now the safe base to continue next time is 636hv 1048nm.
Now the car is safe to drive. I need to let the TCU/ gearbox tune to adapt and drive not too aggressive for awhile. I can say that car is performing pretty nice even on that tune. TCU is no longer doing any over rated limitings.
My tuner did assume that he can tune it to reach 700hv and torque on 1000-1100nm range. Will see what number will come then. I will also dragy the car some day.
My tuner did the TCU tune and some ECU base work for next time, suppose to be later in this summer when the condition are normal without that killer heat! We didn't want to kill the car on the dyno, because it will need several pulls. Now the safe base to continue next time is 636hv 1048nm.
Now the car is safe to drive. I need to let the TCU/ gearbox tune to adapt and drive not too aggressive for awhile. I can say that car is performing pretty nice even on that tune. TCU is no longer doing any over rated limitings.

My tuner did assume that he can tune it to reach 700hv and torque on 1000-1100nm range. Will see what number will come then. I will also dragy the car some day.




Btw. We did leave really conservative tune on my car (608hv and 900nm. ) for now. I did Dragy it today and car went 0-60mph 3,41s time even now on low power tune. New turbos are doing their job nicely
Remember too that my shooting brakes weight is 2005 kg stock and some sub etc. is under the rear floor so the weight is like 2050kg I think. More power to come and new custom ECU tune dyno session after the weather won't be this stupid hot in here.
Btw. We did leave really conservative tune on my car (608hv and 900nm. ) for now. I did Dragy it today and car went 0-60mph 3,41s time even now on low power tune. New turbos are doing their job nicely
Remember too that my shooting brakes weight is 2005 kg stock and some sub etc. is under the rear floor so the weight is like 2050kg I think.More power to come and new custom ECU tune dyno session after the weather won't be this stupid hot in here.
And a stupid question lol, i notice that you use "hv" while western countries use "hp." What is the full meaning of hv? And I think the way European and western countries measure horsepower, there is always a slight discrepancy between the #s.


