Mercedes-Benz engine remapping BHP and Torque gains

Remapping the Mercedes-Benz CLK (1997-2002), 55 AMG 347HP.

The Mercedes-Benz CLK (1997-2002)'s 55 AMG 347HP responds evenly to remapping, with BHP rising 5.8% to 367bhp alongside a closely matched 4.9% torque increase to 535Nm.

As a naturally aspirated petrol, gains are more modest by nature, and this worthwhile improvement is best appreciated as sharper throttle response rather than a transformed power band. These figures apply to 1997-2002 models.

Typical remap gains for the CLK 55 AMG 347HP

Power (Horsepower)
Standard vs Remapped
STANDARD 347 BHP

TUNED → 367 BHP

Torque
Standard vs Remapped
STANDARD 510 NM

TUNED → 535 NM

+20 BHPPower gained
+5.8%BHP increase
+25 NmTorque gained
+4.9%Torque increase

  • Power: 347bhp standard, 367bhp after a Stage 1 remap.
  • Torque: 510Nm standard, 535Nm after a Stage 1 remap.
  • This is a balanced gain: power and torque increase by a similar margin, rather than one outpacing the other.
  • This is a naturally aspirated engine, so headroom beyond Stage 1 is limited compared with a turbocharged equivalent.
  • As a petrol engine, the practical benefit is mainly felt as sharper throttle response and a broader power band.
  • These figures apply specifically to 1997-2002 models.
  • These are Stage 1 figures only, achieved without any hardware changes.

Questions about remapping your CLK 55 AMG 347HP

How much power and torque does a Stage 1 remap add to the Mercedes-Benz CLK (1997-2002) 55 AMG 347HP?

A Stage 1 remap typically takes the Mercedes-Benz CLK (1997-2002) 55 AMG 347HP from 347bhp to around 367bhp, and torque from 510Nm to around 535Nm. This is a worthwhile gain achieved entirely through software, with no hardware changes required.

Is the Mercedes-Benz CLK (1997-2002) 55 AMG 347HP a good candidate for remapping?

Generally, yes: as a naturally aspirated engine its headroom is more limited, though a well-executed remap can still sharpen throttle response, and the worthwhile gain shown here reflects that. The main caveats are condition, not the engine itself, a healthy service history, no outstanding fault codes, and (for diesels) a clear DPF and EGR are what actually determine whether this particular car is ready for a remap.

Will remapping affect the warranty on my Mercedes-Benz CLK (1997-2002)?

A manufacturer can only void the parts of a warranty that the remap directly affects, not the entire vehicle, under the Consumer Rights Act and EU Block Exemption principles. In practice, on a Mercedes-Benz CLK (1997-2002) 55 AMG 347HP this usually means engine and transmission-related claims are the ones worth discussing with a reputable tuner before booking.

What should I check before booking a remap for my Mercedes-Benz CLK (1997-2002) 55 AMG 347HP?

Before booking, confirm the tuner uses a custom or bespoke file rather than a generic off-the-shelf map, ask whether they do a pre-remap health check, and check service history and mileage on your specific Mercedes-Benz CLK (1997-2002).

What's the difference between a Stage 1 and Stage 2 remap for the 55 AMG 347HP?

Stage 1 is software-only and is what the figures on this page reflect. Stage 2 builds on that, but on a naturally aspirated engine like this, the scope for a Stage 2 remap is limited, since there is little forced induction to work with, so it is a separate conversation with a tuner rather than an automatic next step.

Will remapping my Mercedes-Benz CLK (1997-2002) affect my insurance?

Yes, always, a remap is a modification and must be declared to your insurer regardless of size. Given this worthwhile gain on the 55 AMG 347HP, expect a likely premium increase, and it is worth getting a quote from a specialist modified-vehicle insurer before booking the remap itself.