Mercedes-Benz B · Stage 1

Mercedes-Benz B 180 CDI Stage 1 Remap

Name: Mercedes-Benz B 180 CDI Stage 1 Remap
Brand: Mercedes-Benz

On Mercedes-Benz B 180 CDI diesel engines a Stage 1 remap recalibrates the fuel quantity, injection timing, boost pressure and torque limiter maps. No hardware is changed and the original software is backed up. The same engine is sold with different stock outputs across generations, so the gain depends on your version.

How much bhp does Mercedes-Benz B 180 CDI chip tuning add?

It depends on the generation and the stock output. 180 CDI engines with 109 bhp reach 135–170 bhp with a Stage 1 remap; the largest gain is +61 bhp (W245 180 CDI 109hp). Pick your version in the table below.

Book an appointment Mercedes-Benz B: all engines & Stage 1

Mercedes-Benz B 180 CDI: Stage 1 figures by generation and year

Year / chassis: W246 - 2014 - 2018

Engine	Power	Torque	Gain
Mercedes-Benz B 180 CDI (1800cc) 109hp	109 → 165 bhp	250 → 380 Nm	+56 bhp
Mercedes-Benz B 180 CDI (1500cc) 109hp	109 → 135 bhp	260 → 310 Nm	+26 bhp

Year / chassis: W246 - 2012 - 2014

Engine	Power	Torque	Gain
Mercedes-Benz B 180 CDI (1800cc) 109hp	109 → 135 bhp	260 → 310 Nm	+26 bhp
Mercedes-Benz B 180 CDI (1500cc) 109hp	109 → 135 bhp	260 → 310 Nm	+26 bhp

Year / chassis: W245 - 2005 - 2011

Engine	Power	Torque	Gain
Mercedes-Benz B 180 CDI 109hp	109 → 170 bhp	250 → 360 Nm	+61 bhp

In Taiwan

Where can this be done near you?

GP Power ECU applies the software at its workshop in Hukou, Hsinchu, using EcuPrime-developed files; workshops can also order the file directly.

ENGINE FAMILY

About the Mercedes-Benz OM651 2.1 CDI (200 / 220 / 250 CDI, 2008–2018)

The OM651 is the 2.1-litre four-cylinder diesel of the post-2008 C, E, GLK, GLC, ML, Vito and Sprinter, offered from 136 to 204 hp. Most versions are twin-turbocharged and the hardware is largely shared across outputs.

How a Stage 1 remap works on the Mercedes-Benz B 180 CDI

Stage 1 recalibrates injection, rail pressure, boost and the torque limiter. The gain is especially clear on the 200 and 220 CDI outputs. A full low-rev torque curve results, matched to the 7G-Tronic or 9G-Tronic gearbox.

Pre-remap checklist

Injectors and injector seals (Delphi injector issue on early production).
Timing chain noise and tensioner condition.
DPF load and, where fitted, the AdBlue system.
EGR valve and swirl flap mechanism.

This section is based on GP Power ECU workshop experience; the power and torque figures come from the catalogue measurement above.

Frequently asked questions

How much bhp does Mercedes-Benz B 180 CDI chip tuning add?

It depends on the generation and the stock output. 180 CDI engines with 109 bhp reach 135–170 bhp with a Stage 1 remap; the largest gain is +61 bhp (W245 180 CDI 109hp). Pick your version in the table below.

What is the difference between Stage 1 and Stage 2 on the Mercedes-Benz B 180 CDI?

Stage 1 is software only: no part of the car is changed and the figures in the table apply to this software. Stage 2 is software prepared for hardware changes such as the exhaust, intercooler or intake; the hardware comes first, then the software.

Will chip tuning damage the engine?

No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.

Will my fuel consumption go up?

With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.

How long does it take? Do I leave the car?

Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.

Can I go back to stock later?

Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.

What is checked on the Mercedes-Benz B 180 CDI before remapping?

Before working on the Mercedes-Benz OM651 2.1 CDI (200 / 220 / 250 CDI, 2008–2018) we check: Injectors and injector seals (Delphi injector issue on early production). Timing chain noise and tensioner condition. DPF load and, where fitted, the AdBlue system. EGR valve and swirl flap mechanism. If something needs attention, maintenance comes first; the remap is applied to a healthy engine.