2021 Toyota GR Supra build

I've bought xHP TCU Flash Combo with Wifi Adapter!

Modification · Nov 11, 2025 · by Victor

I tuned my transmission to the Stage 3 OTS TCU-Map. Something very interesting that very few people who own Supras 2.0 might not know is that you do not need to FEMTO your B48TU Supra 2.0 in order to get a transmission tune. an xHP transmission tune adds many benefits to your car which I will attach as additional photos. I've ran this for over 6 months with no issues.

And as a secret between you and me xHP stage 3 on your B48TU triggers audible shift farts in your cabin when banging through gears. at the time, I did have a downpipe and engine sound turned off in the speakers so this is huge news to people who have yet to even try this and want a much more enjoyable sound while cruising in their GR Supra 2/3

2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter!2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter! (photo 2)2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter! (photo 3)2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter! (photo 4)2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter! (photo 5)2021 Toyota GR Supra – I've bought xHP TCU Flash Combo with Wifi Adapter! (photo 6)

Parts

  • xHP Transmission Stage 3 Tune

More from this build

See the whole 2021 Toyota GR Supra build