• Streamlined wiring (most of the factory harness is not needed in an 818R) - Valid point, but factory wiring can be stripped way down
  • Built-in water meth injection control - Ok, sure. I stopped messing with meth injection 8 years ago and never looked back, but any new micro-controller and a few sensors could best current meth controllers
  • Flat shift features - LC, ffs, anti-lag are available with open source or Cobb Accessport
  • Ability to log additional sensor data - the unused sensor wires, like TGVs, can be used for logging other sensors
  • But most of all the live tuning! - available with Accessport


Regardless, you've got to go with what you're most familiar and comfortable with.