Mercedes-Benz SL-Class SL550 5.5 V8 Biturbo Stage 2 (435PS) - Reviews | 552655

Mercedes-Benz SL-Class SL550 5.5 V8 Biturbo Stage 2 (435PS) - Reviews | 552655
SL-Class SL550 5.5 V8 Biturbo — Stage 2 Decat ECU Tune
This is an aggressive Stage 2 tuning file for the Mercedes-Benz SL550, powered by the formidable 5.5L V8 Biturbo engine. This calibration is designed exclusively for track and competition vehicles where the catalytic converters have been removed (decat) to allow for maximum engine performance and sound.

This remap completely unleashes the V8 engine, with extensive modifications to the boost, fuel, and ignition maps to take full advantage of the free-flowing exhaust. Expect a massive increase in horsepower and torque, exceptionally sharp throttle response, and a much more aggressive exhaust note. This is the ultimate software solution for turning your SL550 into a track-focused supercar.

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New Tuning File Available: SL-Class SL550 5.5 V8 Biturbo — Stage 2 Decat ECU Tune 552655 - Mercedes-Benz Stage 2 — SW: 552655 — An aggressive decat tune for the 5.5L V8 Biturbo, engineered for maximum power, torque, and an exhilarating sound.

💬 Discussion & Reviews: Mercedes-Benz SL550 5.5 V8 Biturbo​


Welcome to the official discussion thread for the Mercedes-Benz SL550 5.5 V8 Biturbo tuning package. This calibration is specifically developed for the 552655 ECU and optimized for maximum reliability.

Target Performance: 435 PS / 319.9 kW.

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Have you flashed this file? Drop your dyno graphs, 0-100 times, reviews, or ask any technical questions below!

All tuning files were acquired through official EVC.de resellers and verified on a professional dynamometer. Each calibration corresponds to the developer listed in the “Modified By” section — performance graphs may be available on their official website. These files are intended for motorsport or off-road use only. Ensure proper installation and do not operate the vehicle aggressively without first confirming mechanical condition. The seller accepts no responsibility for misuse or non-compliant road use.

Extended Product Information​

  • Maximum performance calibration for a vehicle with decat downpipes
  • Extensive revisions to torque, boost, ignition, and fuel maps
  • Exhaust flap control and overrun parameters modified for aggressive sound
  • Catalyst monitoring and related DTCs disabled in software
  • Sharpened throttle response for instant power delivery
  • Engine protection systems recalibrated for high-performance track use

➜ Download Tuning File / View Full Specs
 

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