It won't quite become a GSU but close. In order to access engine functions you'll need to start the jeti box emulator. You can of course monitor fuel, EGT, pump voltage, etc directly from you Jeti's display though. Personally having both the CB Electronics and the Xicoy Flight Computer I prefer the Xicoy. It's display is like having a GSU in the model and it gives you full telemetry on your Jeti as well.