Mercedes CLS 220 CDI S&S (2.1) 170 hp — Stage 1 file (+40 hp)

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Chip tuning for Mercedes CLS 220 CDI S&S (2.1) 170 hp ECU

Mercedes CLS (2010 - C218) 220 CDI S&S (2.1) 170 hp — premium diesel engine of the passenger segment of the Mercedes-Benz Group AG (Mercedes-Benz, AMG, Maybach, Smart, EQ) group (Германия, 1926). Stage 1 chip tuning raises power from 170 to 210 hp (+40 hp, +24%) and torque from 400 to 500 Nm (+100 Nm). This engine ships with different ECU variants: Delphi CRD3.7A, Bosch EDC17CP46, Siemens/Continental VGSx-NAG2, Delphi CRD3. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 4 configurations · 4 ECU variants. A diesel built in 2010 — the Tricore ECU era; OBD flash works on most production revisions.

AMG is the performance division of Mercedes (since 1967), building engines on the 'one man, one engine' principle in Affalterbach. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Maybach is Mercedes's ultra-luxury sub-brand. Mid-generation diesel models use standard OBD read/write. Mercedes diesels are known for smooth, quiet running, a hallmark of the premium segment. Mercedes diesels have long been known for legendary reliability, with German taxi fleets running to million-kilometre mileages.

Stage 1 on mid-range Mercedes diesels delivers a noticeable torque gain. Mercedes prioritises smooth running, and Stage 1 preserves the engine's character. The Mercedes factory calibration allows a confident move to Stage 1 without hardware changes. The Mercedes community is active in Europe, with a large pool of available Stage files. Mid-range Mercedes engines are a premium segment with a conservative factory calibration, and Stage 1 preserves engine life.

Frequently asked questions

What is the Stage 1 effect on the Mercedes CLS 220 CDI S&S (2.1) 170 hp?

Stage 1 for the Mercedes CLS 220 CDI S&S (2.1) 170 hp adds +40 hp — power increases from 170 to 210 hp (+24%). Torque rises from 400 to 500 Nm (+100 Nm).

What does a Stage 1 remap of the Mercedes CLS 220 CDI S&S (2.1) 170 hp include?

Stage 1 on the Mercedes CLS 220 CDI S&S (2.1) 170 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +40 hp with no hardware changes.

Is a Stage 1 remap safe for the 220 CDI S&S (2.1) 170 hp?

Stage 1 on the Mercedes CLS 220 CDI S&S (2.1) 170 hp is developed while keeping the factory AFR, knock control and temperature limits. Engine life is preserved provided regular maintenance is carried out.

How does Stage 2 differ from Stage 1 on the Mercedes CLS 220 CDI S&S (2.1) 170 hp?

Stage 2 for the Mercedes CLS 220 CDI S&S (2.1) 170 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

How many ECU variants does the Mercedes CLS 220 CDI S&S (2.1) 170 hp have?

The Mercedes CLS 220 CDI S&S (2.1) 170 hp has 4 ECU variants: Delphi CRD3.7A, Bosch EDC17CP46, Siemens/Continental VGSx-NAG2, Delphi CRD3. Before flashing you need to read the specific unit — calibration is done for the exact hardware/software.

Does Stage 1 void the warranty on the Mercedes CLS?

Stage 1 on the Mercedes CLS voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Mercedes CLS 220 CDI S&S (2.1) 170 hp done?

The full remap cycle for the Mercedes CLS — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Mercedes CLS?

The original Mercedes CLS ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Mercedes CLS 220 CDI S&S (2.1) 170 hp?

The cost of Stage 1 for the Mercedes CLS 220 CDI S&S (2.1) 170 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 31.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno