Mitsubishi Lancer Evolution X STX300 Package

60+HP increase by simply plugging into your OBD2 Port!
As with many high performance vehicles, your Evolution X was delivered from the factory with a conservative tune.  By incorporating the Cobb AccessPort V3 and the AMS STX300 Flash, you will unlock the power the factory held back. Our safe and proven tuning calibrations work by optimizing the performance of your ECU’s fuel and timing curves and the MIVEC system providing you with improved throttle response, quicker spool up and maximum power throughout the entire RPM range.  Not to mention a boost in fuel economy!
You can expect 60+HP gains with this simple yet extremely effective modification!  This is an easy, plug and play modification that anyone can quickly install or remove.  No wire cutting/splicing or tools of any kind are required.

Exclusive Benefits

  • 60+HP increase
  • Improved throttle response, quicker turbo spool up
  • Increased power throughout the entire RPM range
  • Increase fuel economy
  • Seamless integration
  • Can easily be returned to 100% stock
  • Safe, proven & repeatable results
  • Live Datalogging and OBD2 access


  • Cobb AccessPort V3
  • Evolution X STX300 ECU Calibration for 98Pump Fuel