I was able to flash over GIAC without a problem. If you do go the pro tune route, you can request the standard throttle mapping from 1M or go with the linear one. There's also a way to customize the throttle. The throttle mapping has a lot to do with the perception of the car being faster or slower in daily driving. That's why a lot of folks like the standard because it feels faster.
Engine: MOTIV 750 / MOTIV Port Injection / Fuel-It! Stage 3 LPFP / Helix FMIC / ER CP + TiaL BOV
Tuning: JB4 MAC_11 / MHD BMS Backend / Split Second AIC1-V6H
Suspension: Bilstein PSS9 / Full M3 Suspension / Quaife LSD / Defiv Lockdown / Megan Toe Arms | Wheels/Tires: Forgestar F14 19x8.5F +34 / 19x10R +38 / Michelin PSS