2JZ Top speed tune setup for the GR Toyota Supra in Forza Horizon 5.FH5 TOP SPEED TUNES: 335MPH/540KPH Jesko: 357K subscribers in the ForzaHorizon community. A place to share, discuss and celebrate everything about the Forza Horizon series! Here is my 270mph/434kmh 2JZ powered top speed build for the 2020 Toyota GR Supra in Forza Horizon 5!» Share Code: 285 831 07400:00 Parts1:31 Tuning2:00 Top u3HJBT.