Mercedes ML 250 CDI S&S (2.1) 204 hp — Stage 1 file (+36 hp)
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Stage 1 file for Mercedes ML 250 CDI S&S (2.1) 204 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes ML 250 CDI S&S (2.1) 204 hp ECU
Mercedes ML (2011 - W166) 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. A diesel built in 2011 — the Tricore ECU era; OBD flash works on most production revisions.
The Mercedes slogan is 'Das Beste oder nichts' ('The best or nothing'). Smart is Mercedes's city sub-brand, historically running Mitsubishi and Renault engines. Karl Benz is credited as the inventor of the automobile with the 1886 Patent-Motorwagen. Mercedes diesels have long been popular with the German police and taxi services. Mercedes diesel engines are fitted to passenger cars and commercial vehicles. BlueTEC is Mercedes's proprietary exhaust after-treatment system with an SCR catalyst and AdBlue.
Stage 1 on Mercedes often requires refreshing the adaptations after the flash. On Mercedes up to the recent generation, Stage 1 OBD flash is available. In the Mercedes commercial segment, Stage 1 focuses on torque. 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
How much does the power of the Mercedes ML 250 CDI S&S (2.1) 204 hp increase after Stage 1?
Stage 1 chip tuning on the Mercedes ML 250 CDI S&S (2.1) 204 hp boosts engine output by 36 hp: from 204 to 240 hp. Torque rises from 480 to 550 Nm (+70 Nm).
What changes in the Mercedes ML ECU after Stage 1?
Stage 1 chip tuning of the Mercedes ML 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 ML 250 CDI S&S (2.1) 204 hp?
Stage 1 on the powerful Mercedes ML 250 CDI S&S (2.1) 204 hp “lifts” the factory limiters with no hardware changes. The gain is noticeable in the mid and upper range. There is headroom left for moving to Stage 2 (downpipe + intake + intercooler).
How much does Stage 2 add on the Mercedes ML?
Stage 2 for the Mercedes ML 250 CDI S&S (2.1) 204 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.
Which ECUs are found on the Mercedes ML 250 CDI S&S (2.1) 204 hp?
The Mercedes ML 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 ML warranty after chip tuning?
The factory warranty of the Mercedes ML 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 ML take?
On the Mercedes ML 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 ML?
Yes, the original ECU firmware of the Mercedes ML 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 ML?
Stage 1 for the Mercedes ML 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.