Mercedes SL 500 (5.0i) 306 hp — Stage 1 file (+20 hp)

or choose step by step
1
Choose a vehicle type

Chip tuning for Mercedes SL 500 (5.0i) 306 hp ECU

Mercedes SL (2002 - R230) 500 (5.0i) 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 326 hp (+20 hp, +7%) and torque from 460 to 485 Nm (+25 Nm). ECU — Bosch ME2.8. Flashing method: OBD or Bench depending on the unit's protection. The 2002 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.

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. 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. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. 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 horsepower does Stage 1 add for the Mercedes SL 500 (5.0i) 306 hp?

The Stage 1 gain for the Mercedes SL 500 (5.0i) 306 hp is 20 hp (+7%) over the stock 306 hp, for a total of 326 hp. Torque rises from 460 to 485 Nm (+25 Nm).

What is Stage 1 chip tuning for the Mercedes SL?

Stage 1 chip tuning of the Mercedes SL 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 SL 500 (5.0i) 306 hp?

The high-output Mercedes SL 500 (5.0i) 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 SL?

Stage 2 on the Mercedes SL 500 (5.0i) 306 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Which ECU is fitted to the Mercedes SL 500 (5.0i) 306 hp?

The Mercedes SL 500 (5.0i) 306 hp ECU is the Bosch ME2.8. Production versions support OBD access; locked variants require Bench (BDM/JTAG).

What happens to the Mercedes SL warranty after chip tuning?

The factory warranty of the Mercedes SL 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 SL take?

On the Mercedes SL 500 (5.0i) 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 SL?

Yes, the original ECU firmware of the Mercedes SL 500 (5.0i) 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 SL?

Stage 1 for the Mercedes SL 500 (5.0i) 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.

Last updated: 31.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno