Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp — Stage 1 file (+24 hp)
hp
Stage 1 file for Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp ECU
Mercedes CLS (2010 - C218) 350 BlueEFFIENCY (3.5i) 306 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 306 to 330 hp (+24 hp, +8%) and torque from 370 to 400 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.
The Mercedes-Benz Group AG (Daimler AG until 2022) comprises Mercedes-Benz, AMG, Maybach, Smart and the EQ line. 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 uses Mercedes engines for the ultra-luxury segment, with the emphasis on quietness and smoothness. The factory calibration on Mercedes petrol engines is conservative, leaving headroom for Stage 1. High-output Mercedes turbo petrol engines are the flagship models, and Stage 1 delivers a solid gain.
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. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. 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 CLS 350 BlueEFFIENCY (3.5i) 306 hp increase after Stage 1?
After Stage 1 the power of the Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp rises from 306 to 330 hp, a gain of 24 hp (+8%). Torque rises from 370 to 400 Nm (+30 Nm).
How does Stage 1 differ from stock on 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 +24 hp with no hardware changes.
Is Stage 1 safe on the high-output Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp?
The high-output Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 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 350 BlueEFFIENCY (3.5i) 306 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which ECUs are found on the Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp?
The Mercedes CLS 350 BlueEFFIENCY (3.5i) 306 hp was fitted with different ECUs depending on the year and trim: Bosch MED17.7.1, Bosch MED17.7.3, Siemens/Continental VGSx-NAG2. 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 350 BlueEFFIENCY (3.5i) 306 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 350 BlueEFFIENCY (3.5i) 306 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 350 BlueEFFIENCY (3.5i) 306 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.