Mercedes CLS 300 (3.5i) 252 hp — Stage 1 file (+23 hp)
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Stage 1 file for Mercedes CLS 300 (3.5i) 252 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLS 300 (3.5i) 252 hp ECU
Mercedes CLS (2010 - C218) 300 (3.5i) 252 hp — premium petrol 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 252 to 275 hp (+23 hp, +9%) and torque from 340 to 370 Nm (+30 Nm). This engine ships with different ECU variants: Bosch MED17.7.1, Bosch MED17.7.3, Siemens/Continental VGSx-NAG2. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 3 configurations · 3 ECU variants. The 2010 generation — mid-generation petrol ECUs (MEDC17/MEVD17/Simos PCR), OBD flash on production revisions.
Mercedes-Benz is the world's oldest carmaker, founded in 1926 by the merger of Daimler-Motoren-Gesellschaft and Benz & Cie. 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. High-output Mercedes turbo petrol engines are the flagship models, and Stage 1 delivers a solid gain. Mid-generation petrol models use standard OBD flash. The Mercedes petrol range spans compacts, premium saloons, SUVs, roadsters and AMG flagships.
Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. The Mercedes community in Europe has a large pool of available Stage files for the standard models. On Mercedes up to the recent generation, Stage 1 OBD flash is available. High-output Mercedes engines are premium-class with solid headroom for Stage 1. 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.
Frequently asked questions
How much horsepower does Stage 1 add for the Mercedes CLS 300 (3.5i) 252 hp?
After Stage 1 the power of the Mercedes CLS 300 (3.5i) 252 hp rises from 252 to 275 hp, a gain of 23 hp (+9%). Torque rises from 340 to 370 Nm (+30 Nm).
How does Stage 1 differ from stock on the Mercedes CLS?
Stage 1 is a software optimization of the factory ECU firmware of the Mercedes CLS with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +23 hp with no hardware changes.
Do you need hardware changes for Stage 1 on the Mercedes CLS?
The high-output Mercedes CLS 300 (3.5i) 252 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.
What is Stage 2 for the Mercedes CLS 300 (3.5i) 252 hp?
Stage 2 on the Mercedes CLS 300 (3.5i) 252 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which control units is the Mercedes CLS 300 (3.5i) 252 hp built with?
The Mercedes CLS 300 (3.5i) 252 hp comes with 3 ECU variants: Bosch MED17.7.1, Bosch MED17.7.3, Siemens/Continental VGSx-NAG2. Calibration is done for the specific unit after the revision is identified.
Does the factory warranty of the Mercedes CLS remain valid after Stage 1?
After remapping the Mercedes CLS, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.
How long is the wait for a Stage 1 remap for the Mercedes CLS?
Reading and writing via OBD takes 25-30 minutes on the Mercedes CLS. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.
How do you roll back to the factory firmware of the Mercedes CLS?
Before Stage 1 the original of the Mercedes CLS 300 (3.5i) 252 hp is read out and saved — returning to the factory state is possible at any time.
How much does chip tuning the Mercedes CLS 300 (3.5i) 252 hp cost?
The remap price for the Mercedes CLS 300 (3.5i) 252 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.