W163 ML270 CDI with slight upgrades

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baldur

Fast

509

12-21-2020, 07:40 AM #1

So I purchased a ML270 CDI last year for ECU development work.
[Image: 2020_04_21_13_19_59.sized.jpg]

Extremely slow, 160 horsepower and stuck in limp mode with an EGR fault. Drove it just one day before replacing the Bosch ECU with my own design DID1 ECU. Big improvement in throttle response and power.

[Image: 2020_03_14_20_18_45.sized.jpg]

Next came a turbo upgrade, a GT2359V off an OM648 engine modified to fit, well worth upgrading to an electronic actuator, vacuum is just the wrong way to control a turbocharger, direct electronic control is so much more precise.

[Image: 2020_03_28_16_40_20.sized.jpg]

Water/methanol injection, would never tune a diesel without it.

[Image: 2020_11_14_22_51_14.sized.jpg]

The stock high pressure pump was a bottleneck, unable to keep up with even the stock injectors. CP3L110 pump off a V8 Mercedes to the rescue.

[Image: 2020_11_28_16_54_22.sized.jpg]

The stock intercooler was no good whatsoever, looked big but didn't cool worth a damn. Upgrade was required.

Original 0-100km/h specified 11.4 seconds. Now does it in 5.9 seconds, good daily driver. Will likely change the turbo again to make it a little faster.

https://www.youtube.com/watch?v=yh5yKbFx8ag

Baldur Gislason

M-ic

W201 OM605/722.6 fully electronic

15

01-04-2021, 06:01 PM #2

Amazing stuff!!! Really getting the potential out of that ole 5 banger…. :-D

dcm

TA 0301

63

03-30-2021, 07:15 AM #3

Great write up and information!! I'm currently working on my own ML270, are you able to modify the original ECU?

dcm

TA 0301

63

03-30-2021, 07:15 AM #4

Have you upgraded injectors to 'C30' spec?

baldur

Fast

509

03-31-2021, 08:55 AM #5

(03-30-2021, 07:15 AM)dcm Great write up and information!! I'm currently working on my own ML270, are you able to modify the original ECU?

No I will not touch the original ECU, it's not able to do the things I want to do.

Baldur Gislason

baldur

Fast

509

03-31-2021, 09:05 AM #6

(03-30-2021, 07:15 AM)dcm Have you upgraded injectors to 'C30' spec?

No and I don't think I will, I don't think it's a worthwhile upgrade as I am planning to fit a bigger turbo that will require more fuel than the C30 injectors can deliver. With my current setup using the GT23V turbo the C30 injectors would be an improvement but I am still running the stock injectors, and I can get away with it because the methanol injection makes up for the lack of fuel flow.

Baldur Gislason

Grecy

GTA2056V

75

06-08-2021, 12:57 AM #7

Nicely done!

Is that an OM613?
Which is more-or-less a 5-cyl OM648, right?
Do you know if there is a rear sump for that engine?

Thanks,
-Dan

This post was last modified: 06-08-2021, 12:59 AM by Grecy.

baldur

Fast

509

06-11-2021, 04:28 AM #8

This is an OM612, which is a 5 cylinder OM613.

There are some rear sumps that fit. Sumps are interchangeable between this engine and the OM602/605/647

Baldur Gislason

starynovy

Holset

338

01-21-2024, 12:25 PM #9

What WM injection do you use?

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Ex: 525tds 130kW, C250TD 160kW, E320CDI 200kW, ML400CDI 230kW, A6 R5TDI 130kW
Now: Q7 V8TDI 240kW, 320d 150kW, 335d 210kW

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