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Mercedes · Stage 1

Mercedes CLK 350 Stage 1

A mobile Stage 1 calibration by MTechTuning, with dealer-level diagnostics before and after tuning.

Published vehicle figures

Stock

272hp

350Nm

Stage 1

292hp

375Nm

Difference

+20hp

+25Nm

Figures published for this vehicle. Results vary with model year, software, fuel and condition, so we confirm what suits your car before quoting.

Mercedes CLK 350 Stage 1

This Mercedes CLK 350 went from 272hp and 350Nm to 292hp and 375Nm with our Stage 1 calibration.

A subtle but noticeable lift

The factory calibration is restrained under load. Stage 1 improves throttle response and gives cleaner, more consistent power, so the car feels more eager without becoming aggressive.

ECU and tools

This car has a Bosch ME9.7 ECU and was calibrated through the diagnostic port with AutoTuner.

Included

  • Speed limiter solution
  • Original ECU file backed up

Can older Mercedes V6 petrols be tuned?

Yes. We come to you across Bristol, North Somerset, Somerset and South Wales.

About this job

The results

From 272hp as standard to 292hp, the Mercedes CLK 350 gained 20hp, roughly 7% more power.

Torque rose from 350Nm to 375Nm (+25Nm), which is what you feel most in everyday driving: stronger pull from low revs and easier overtaking.

What the work involved

This was a Stage 1 calibration: no hardware changes, just carefully refined engine software. Boost, fuelling, timing and torque limits are adjusted within safe margins for more usable performance every day.

How we carried it out

  • Diagnostic scan for stored faults before any work
  • Stabilised power supply connected while programming
  • Original software read and saved, so the car can be returned to standard
  • Calibration written, then the car checked again afterwards

Thinking about the same for your Mercedes-Benz?

We come to you from our Weston-super-Mare base, across Bristol, Somerset, Gloucestershire, Wiltshire, South Wales and parts of Devon and Dorset. Results depend on the exact car, so we confirm what suits yours before quoting.

Mercedes-Benz tuning Check your gains
Mercedes CLK 350 Stage 1 photographed by MTechTuning
  • Dealer-level diagnostics before and after
  • Fully mobile, at home or work
  • Lifetime software warranty and support
  • 14-day money-back guarantee

More recent jobs

More Mercedes work, with published figures.

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Talk through your vehicle

Find out what your car can do.

Share your registration, mileage and what you would like to improve. We're always online to quote and reply, and we'll confirm what is suitable before booking, then come to you. Fully mobile from our Weston-super-Mare base across Bristol, Somerset, Gloucestershire, Wiltshire, South Wales and parts of Devon and Dorset.

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