RaceChip GTS Black 5-10 minutes install and uninstall.
You can turn off from the App or remove the module and use the included dummy plug / bypass plug.
And, it comes with 2x free reprogramming within 3 years of ownership and engine warranty.
I personally would skip JB4 and go directly to flash tune like DME/BM3.
Oh, and secondary downpipe will help the sound and performance.