A major triple addition just landed in the ECUPlex public catalog. EDC16C2, EDC16C31, and EDC16CP36 — three Bosch controllers that together ran a huge slice of the classic Mercedes-Benz diesel range — are now fully supported and available to every user on a Basic, Pro, or Max subscription. For shops that see a steady flow of mid-2000s to early-2010s CDI models, this drop fills in one of the biggest remaining gaps in the catalog.

The Mercedes diesel line-up of that era was extraordinarily broad. From compact hatchbacks to full-size luxury SUVs, from four-cylinder people-movers to V8-powered flagships, the same three Bosch ECU families handled the vast majority of it. Getting all three into the platform together makes ECUPlex a genuinely complete option for anyone working with the CDI generation.

A closer look at the trio

All three units belong to Bosch's EDC16 family — the diesel ECU generation that took over from EDC15 in the mid-2000s and became the standard across European diesel applications for the better part of a decade. Under the hood they run on Freescale/Motorola MPC5xx-series automotive microcontrollers, configured with the peripheral sets Bosch tailored specifically to Daimler's calibration requirements.

The split between the three controllers reflects how Mercedes rolled out its diesel lineup across the period. EDC16C2 covered the earlier waves of CDI applications — the four-cylinder OM646 2.2 CDI, the five-cylinder OM647 2.7 CDI in the Sprinter W905, and the six-cylinder OM648 3.2 CDI in the W211 E320 CDI. EDC16C31 handled other four- and five-cylinder builds across the range, from the B-Class W245 with the OM640 2.0 CDI through to the E270 CDI running the OM612. And EDC16CP36 stepped in for the BlueTEC-era V6 and V8 applications, running the OM642 3.0 V6 CDI across the passenger lineup and the big OM629 4.0/4.2 V8 CDI at the top of the range.

The CDI engines — a quick refresher

This trio of ECUs primarily runs the engines that defined Mercedes-Benz's diesel identity through the mid-2000s and early-2010s. The OM640 2.0 CDI (four-cylinder, introduced in 2004) powered the compact A- and B-Class in outputs from roughly 82 to 140 HP. The OM646 2.2 CDI (four-cylinder) served as the mainstream C- and E-Class diesel, typically in the 122 to 170 HP range. The OM647 2.7 CDI and OM648 3.2 CDI added five- and six-cylinder options for the E-Class, Sprinter, and other applications.

At the top of the range, the OM642 3.0 V6 CDI became the dominant premium diesel for Mercedes throughout the BlueTEC era, delivering between 190 and 265 HP depending on the application, and the OM629 4.0/4.2 V8 CDI powered the flagship S-Class, ML, and GL builds with up to 320 HP and over 700 Nm of torque.

Vehicle coverage

Because these three ECUs collectively handled almost the entire mature CDI production run, model coverage spans nearly the whole Mercedes-Benz diesel lineup of the period. You'll find these units in:

In other words: if a CDI-badged Mercedes from roughly 2003 through 2012 pulls into the bay, there's a very strong chance one of these three ECUs is the controller you'll be reading.

What ECUPlex actually does with the file

This is worth being precise about, because there's a lot of marketing noise in the tuning space. ECUPlex is not a library of pre-built tuning files, and it doesn't make calibration decisions on your behalf. What ECUPlex does is take the binary you've pulled from the vehicle and automatically identify the maps inside it — labeling them, organizing them, and presenting the file in a clean, structured workspace that's ready to edit.

For EDC16C2, EDC16C31 and EDC16CP36 specifically, that means you'll land in the project with the key calibration regions already identified — injection quantity and timing maps, boost pressure setpoints, rail pressure control, smoke and torque limiters, EGR strategy, DPF regeneration parameters, DTC tables, lambda targets, and the rest of the structures relevant to a modern CDI calibration. From that point onwards, the actual tuning work is yours: your numbers, your strategy, your responsibility for what gets written back to the vehicle. ECUPlex removes the time-consuming part of finding the maps; the craft of tuning them stays where it belongs — with the professional doing the job.

Why it matters for your workflow

The classic CDI Mercedes lineup is still very much in active service. These cars have aged into the price bracket where their owners are increasingly likely to bring them to an independent tuner for a remap, a DPF cleanup, or a recalibration after mechanical work — and the higher-mileage engines in this segment often benefit meaningfully from a well-executed remap that restores drivability. Across a family with this many variants, model years and engine displacements, the time spent locating maps and verifying axes adds up quickly.

By taking map recognition out of the equation across all three controllers, ECUPlex shortens the path from "file pulled" to "ready to tune" considerably. The cleaner your starting point, the more time you spend on the parts of the job that actually generate value: calibration choices, validation, and the fine-tuning that separates a professional remap from a generic one.

Available now

EDC16C2, EDC16C31 and EDC16CP36 are live in the ECUPlex public catalog as of today, and are included with every Basic, Pro, and Max subscription at no additional cost. Open your dashboard, load a Mercedes-Benz CDI file, and see how it changes the rhythm of your workflow.

As always, feedback from real-world shop use is the fastest path to a sharper product — so if you spot something that could be better, tell us. The catalog grows the way the platform grows: one file at a time, refined by the people actually using it.

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