Mercedes CLS 250 CDI S&S (2.1) 204 hp — Stage 1 file (+36 hp)
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Stage 1 file for Mercedes CLS 250 CDI S&S (2.1) 204 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLS 250 CDI S&S (2.1) 204 hp ECU
Mercedes CLS (2010 - C218) 250 CDI S&S (2.1) 204 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 204 to 240 hp (+36 hp, +18%) and torque from 480 to 550 Nm (+70 Nm). This engine ships with different ECU variants: Delphi CRD3.58, Bosch EDC17CP46, Bosch EDC17CP57, Bosch EDC17CP60, Siemens/Continental VGSx-NAG2, Delphi CRD3. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 6 configurations · 6 ECU variants. The 2010 generation — mid-generation diesels on the EDC17 platform with OBD reading support and no need for Bench.
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. Mercedes-Benz is the world's oldest carmaker, founded in 1926 by the merger of Daimler-Motoren-Gesellschaft and Benz & Cie. 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. Mercedes pioneered CDI (Common-rail Direct Injection) technology on passenger-car diesels, in series production since 1997.
Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. The Mercedes community in Europe has a large pool of available Stage files for the standard models. On modern high-output Mercedes, Bench reading is often required because of the encryption. The Mercedes premium segment is a high-output platform with Stage 2 potential. High-output Mercedes engines are premium-class with solid headroom for Stage 1.
Frequently asked questions
What power gain do you get after chip tuning the Mercedes CLS 250 CDI S&S (2.1) 204 hp?
The Stage 1 gain for the Mercedes CLS 250 CDI S&S (2.1) 204 hp is 36 hp (+18%) over the stock 204 hp, for a total of 240 hp. Torque rises from 480 to 550 Nm (+70 Nm).
What is Stage 1 chip tuning for the Mercedes CLS?
Stage 1 chip tuning of the Mercedes CLS is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +36 hp with no hardware changes.
Is Stage 1 safe on the high-output Mercedes CLS 250 CDI S&S (2.1) 204 hp?
The high-output Mercedes CLS 250 CDI S&S (2.1) 204 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.
How much does Stage 2 add on the Mercedes CLS?
Stage 2 on the Mercedes CLS 250 CDI S&S (2.1) 204 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which ECUs are found on the Mercedes CLS 250 CDI S&S (2.1) 204 hp?
The Mercedes CLS 250 CDI S&S (2.1) 204 hp was fitted with different ECUs depending on the year and trim: Delphi CRD3.58, Bosch EDC17CP46, Bosch EDC17CP57, Bosch EDC17CP60, Siemens/Continental VGSx-NAG2, Delphi CRD3. The write method (OBD, Bench, Boot) is determined when the unit is read.
What happens to the Mercedes CLS warranty after chip tuning?
The factory warranty of the Mercedes CLS does not remain valid after Stage 1 — the manufacturer withdraws its obligations once the ECU software is changed. CHIPOK provides its own warranty on its work and support.
How long does remapping the Mercedes CLS take?
On the Mercedes CLS 250 CDI S&S (2.1) 204 hp: OBD flash 25-30 minutes, Bench (if required) about an hour. The file processing itself takes 5-30 minutes once the original bin is received.
Is the original file kept when chip tuning the Mercedes CLS?
Yes, the original ECU firmware of the Mercedes CLS 250 CDI S&S (2.1) 204 hp is kept and can be flashed back at any time. Returning to stock via OBD takes 25-30 minutes.
What is the price of a Stage 1 remap for the Mercedes CLS?
Stage 1 for the Mercedes CLS 250 CDI S&S (2.1) 204 hp is paid for with CHIPOK credits (1 cr = 1 €). The final amount is set in the calculator, taking the extra options (off functions) into account.