Porsche 99-04 996 Carrera Softronic ECU Tune


Unlock extra power and increased response with a Softronic ECU Tune! Safely enhance the enjoyment of your vehicle with no drawbacks. Make the most out of your SOUL performance upgrades through software optimization.

OBD2 tuning available for 1999+ C4 and 2000+ C2 vehicles. 98-99 C2 must be bench flashed – tune available here

SKU: POR.996.ECU Categories: ,


Model  Base BHP   Tuned BHP   Base Torque   Tuned Torque 
98-99 300 322 258 271
00-04 3.4L 300 322 258 271
00-04 3.6L 320 340 273 286
00-04 3.6L X51 345 360 295 308



Softronic will send all tuning information / files via email to each customer upon ordering with the end goal being the best possible tune for your Porsche.

Do I have to take my car somewhere to flash it?
No!  You can do it in the comfort of your own garage at your convenience. The included DimSport MyGenius handheld device interfaces with your OBD2 port to deliver the tune to your vehicle. Upon receiving the order, Softronic will ship your tuning device to you within 1-2 days after the order is placed via ground shipping. Please contact us for time sensitive orders. Instructions are sent via email to guide you through the process which summarized is as follows:

  1. Download Dimsport software to your PC
  2. Update software and Dimsport
  3. Connect to car and read ECU file
  4. Send ECU file to Softronic via email
  5. Receive tune file back and then upload to car.

What octane are these tunes compatible with?
Files are tuned to work with street gas ideally between 91 octane to 93 octane. When using race fuel please contact us to ensure tune will maximize its potential.

How do I return my car back to the stock tune?
Your stock file is saved in the DimSport when you pull the file to send to Softronic. It can be flashed back at any time via the same method the ECU tune is flashed to the car.

If I add an exhaust or intake, do I need to reflash my car?
No.  Softronic goes through and tunes each individual table. Unlike others that do a global change to files, Softronic enables the ECU to adapt to basic bolt-on modifications like exhaust, intake, headers, etc. The only time you need to re-reflash your vehicle is when you change fuel components, turbo sizes, or engine internals, etc.


  • Each tune is paired with your specific vehicle and can only be used on one vehicle.
  • Have any questions? Concerns? Contact us at any time to discuss upgrading your vehicle.

ABOUT SOFTRONIC:  Based out of Connecticut, Softronic has been working with Porsche systems for nearly 30 years. From street cars to race cars, Softronic has involved itself in all types of motorsports to stay continuously involved in the industry. Having cutting edge technology not only makes the ECU Tuning process more efficient, it also makes it more accurate. Softronic has been the technical advisor for the Porsche Club of America (PCA) for over 10 years as well. One of the main functions that Softronic serves is data checking of Porsche Motorsports vehicles for race teams. Reading out the binary code and checking data allows Softronic to gain OEM insight into the vehicles brain unit and of course, a fair playing field for race regulations. In the tuner market focusing on street cars, Softronic has gained a very solid name. Softronic exclusively tuned the Porsche Interseries cars, winning Daytona car, World Challenge, Koni Cup and countless others in racing. Some of the fastest cars are tuned in cooperation with Softronic – everything from 1000HP 996 Turbos to daily driven Porsche 987 Cayman.