Cayman GT4 981 3.8 DFI — SDI9 W0600C4000000 Siemens — ECU Files

Cayman GT4 981 3.8 DFI — SDI9 W0600C4000000 Siemens — ECU Files
Cayman GT4 981 3.8 DFI — SDI9 W0600C4000000 Siemens — ECU Files
This is a high-performance Stage 2 tuning file for the track-focused Porsche Cayman GT4 (981), equipped with a Siemens/Continental SDI9 ECU. This calibration is designed for vehicles that have been mechanically upgraded with a full high-flow or decat exhaust system, from headers to tailpipes, to achieve the maximum possible performance from the naturally aspirated 3.8L flat-six engine.

This aggressive remap is engineered for the ultimate track day experience. We have extensively recalibrated the ignition timing, fuel maps, and VarioCam camshaft phasing to take full advantage of the free-flowing exhaust. The result is a significant increase in horsepower, a razor-sharp throttle response, and a breathtaking exhaust note that truly unleashes the sound of the GT4's motorsport-derived engine.

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New Tuning File Available: Cayman GT4 981 3.8 DFI — SDI9 W0600C4000000 Siemens — ECU Files W06C40C1 - Porsche Stage 2 — Prod: 98161866006 — A track-focused tune for the GT4, calibrated for a full performance exhaust system to maximize power and sound.

💬 Discussion & Reviews: Porsche 3.8 DFI​


Welcome to the official discussion thread for the Porsche 3.8 DFI tuning package. This calibration is specifically developed for the 981 - 2013 -> ... ECU and optimized to work seamlessly with the 6M.

Target Performance: 385 PS / 283.2 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​

  • Calibrated for vehicles with high-flow or decat headers and a full sports exhaust
  • Aggressive ignition timing and fuel mapping for maximum power on high-octane fuel
  • Optimized camshaft phasing (VarioCam) for an extended, high-RPM powerband
  • Sharpened throttle response for ultimate control and driver feedback
  • Catalyst monitoring disabled in software to prevent errors (for off-road use)
  • All engine safety systems retained and recalibrated for track performance

➜ Download Tuning File / View Full Specs
 

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