Mercedes S 450 (4.7i) 340 hp — Stage 1 file (+20 hp)
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Stage 1 file for Mercedes S 450 (4.7i) 340 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes S 450 (4.7i) 340 hp ECU
Mercedes S (2005 - W221) 450 (4.7i) 340 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 340 to 360 hp (+20 hp, +6%) and torque from 460 to 490 Nm (+30 Nm). ECU — Bosch ME9.7. Flashing method: OBD or Bench depending on the unit's protection. The 2005 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.
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. 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.
Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Stage 1 on Mercedes often requires refreshing the adaptations after the flash. 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 S 450 (4.7i) 340 hp?
After Stage 1 the power of the Mercedes S 450 (4.7i) 340 hp rises from 340 to 360 hp, a gain of 20 hp (+6%). Torque rises from 460 to 490 Nm (+30 Nm).
How does Stage 1 differ from stock on the Mercedes S?
Stage 1 chip tuning of the Mercedes S is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +20 hp with no hardware changes.
Is Stage 1 safe on the high-output Mercedes S 450 (4.7i) 340 hp?
The high-output Mercedes S 450 (4.7i) 340 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 S?
Stage 2 on the Mercedes S 450 (4.7i) 340 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which ECU is fitted to the Mercedes S 450 (4.7i) 340 hp?
The Mercedes S 450 (4.7i) 340 hp ECU is the Bosch ME9.7. Production versions support OBD access; locked variants require Bench (BDM/JTAG).
What happens to the Mercedes S warranty after chip tuning?
The factory warranty of the Mercedes S 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 S take?
On the Mercedes S 450 (4.7i) 340 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 S?
Yes, the original ECU firmware of the Mercedes S 450 (4.7i) 340 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 S?
Stage 1 for the Mercedes S 450 (4.7i) 340 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.