Mercedes OM654 2.0L Diesel Tuning - Auckland

Professional ECU tuning for the Mercedes OM654 2.0L diesel four-cylinder. Custom dyno calibrations on our in-house Mainline dynamometer. The successor to the OM651 - found in the newer C220d, E220d, E300d, GLC220d, and GLC300d with improved efficiency and power.

Book Custom Tune Call 0800 276 968

OM654 Models We Tune

All powered by Mercedes' 2.0L Diesel Inline-4 - engineered by Mercedes-Benz for durability and efficiency.

C220d (W205 facelift / W206) - 194-200 hp

C300d (W205 facelift / W206) - 245 hp

E220d (W213 facelift) - 194-200 hp

E300d (W213) - 245 hp

GLC220d (X253 facelift / X254) - 194-200 hp

GLC300d (X253 facelift / X254) - 245 hp

GLE300d (W167) - 245 hp

OM654 Tuning Power Figures

All figures are approximate, SAE J1349-corrected on our Mainline hub dynamometer. EuroLab develops custom calibrations on-car - tuned for NZ diesel fuel specifications.

Power at a Glance

Stock Power150-245 hp / 360-500 Nm

Stage 1 (Software Only)230-290 hp / 460-560 Nm

Stage 2 (ECU + Bolt-Ons)270-330 hp / 530-620 Nm

Maximum Potential350-400+ hp (upgraded turbo)

Why the OM654?

The OM654 is Mercedes' newest generation diesel four-cylinder - aluminium block, NANOSLIDE cylinder coating, and significantly lighter than the OM651 it replaces
The C300d and E300d variants (245hp stock) are already quick - a Stage 1 tune pushes them into genuine performance car territory for a diesel
Improved fuel efficiency over the OM651 means tuning gains come without the traditional diesel economy penalty
The OM654 supports higher boost pressures from the factory - giving tuners more headroom to work with safely

Look Up Your Tuning Potential

Select your vehicle to see expected power gains

Make

Model Family

Generation / Year

Engine

Power figures are estimates based on available tuning data. Actual results are validated on our in-house Mainline CCS3600 hub dynamometer and may vary based on fuel quality, ambient conditions, and individual engine health.

Tuning Pricing

Transparent pricing for all tuning options. All prices in NZD.

EuroLab Custom Dyno Tune

Professional custom calibration on our Mainline CCS3600 hub dynamometer. We develop the tune file in-house - calibrated for your specific vehicle and NZ diesel fuel.

Stage 1 Custom Dyno Tune$2,500 incl. GST

Stage 2 Custom Dyno Tune$3,000 incl. GST

Includes baseline dyno run, custom calibration for your specific car, and final validation pulls.

TCU Transmission Tune

Transform your automatic transmission with faster shifts, raised torque limiters, and improved shift logic. Recommended alongside ECU tuning.

TCU Tune (enquire for pricing)Call 0800 276 968

Stage 2+ Hardware Installs

Stage 2: Downpipes, intake, intercooler upgrades - installed and tuned at EuroLab.

Stage 3+: Upgraded turbochargers, fuel system, and supporting modifications - full build programme.

Call 0800 276 968 or book online for a custom quote.

How It Works - Our Tuning Process

Every EuroLab custom tune follows the same rigorous 4-step process.

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1. Consultation & Health Check

We inspect your vehicle, check for fault codes, and discuss your goals. No tuning happens on a car with underlying issues.

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2. Baseline Dyno Run

Your car goes on our Mainline CCS3600 hub dynamometer for baseline power and torque measurements - SAE J1349-corrected for honest, repeatable numbers.

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3. Custom Calibration

We develop your tune file in-house, making iterative adjustments on the dyno. Fuel maps, boost targets, ignition timing - all calibrated for your specific vehicle and NZ diesel fuel.

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4. Final Validation & Handover

Final power pulls to confirm gains, data review with you, and a road test. You leave with your dyno sheet and a car that performs exactly as promised.

Why Choose EuroLab?

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In-House Mainline Hub Dyno

SAE J1349-corrected figures on our Mainline CCS3600 - the most conservative standard. Our numbers are real, repeatable, and honest.

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Custom Calibrations In-House

We develop our own proprietary tune files, calibrated live on the hub dyno. Every tune is built specifically for your car.

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Full Workshop

We don't just flash ECUs. Diagnostics, repairs, bolt-on installs, turbo swaps - everything under one roof at our East Tamaki workshop.

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149+ Five-Star Reviews

4.8-star Google rating. Our reputation is built on quality work, honest advice, and cars that perform exactly as promised.

Ready to Unlock Your OM654?

Book your custom dyno tune or call us to discuss your build.

Book Online Call 0800 276 968

OM654 Tuning FAQs

How much power can a tuned OM654 make?

With a custom dyno tune, the OM654 typically produces 230-290hp at Stage 1 (software only). The C300d/E300d variants reach 290hp easily. Stage 2 with bolt-ons pushes to 270-330hp. All figures SAE J1349-corrected on our Mainline CCS3600 hub dyno.

How much does it cost to tune an OM654 in Auckland?

EuroLab's custom dyno tune is $2,500 incl. GST. This includes a baseline dyno run, custom calibration for your specific car, and final validation pulls - calibrated for NZ diesel fuel specifications.

What's the difference between OM654 and OM651?

The OM654 is the newer replacement for the OM651. Key improvements: aluminium block (20kg lighter), NANOSLIDE cylinder coating (reduces friction), stepped-bowl combustion chambers, and higher boost capability. The OM654 generally responds better to tuning with more headroom in the factory hardware.

Is the OM654 reliable after tuning?

The OM654 is designed to meet stricter Euro 6d emissions standards, which means stronger internals to handle higher cylinder pressures. Stage 1 is very safe. The engine is newer so there are fewer known long-term issues compared to the OM651.

Can you tune the C300d?

Yes, and it's one of the best diesel tuning values. The C300d at 245hp stock jumps to around 290hp at Stage 1 with 560Nm of torque. That's proper performance car territory for a diesel sedan - and you still get diesel fuel economy.

Does the OM654 have the same timing chain issues as the OM651?

The OM654 uses an improved timing chain system with better tensioners. Early reports suggest significantly better reliability than the OM651's chain. However, we still inspect the timing chain as part of our pre-tuning health check on any engine.

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