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2021 Toyota GR Supra – Stage 2 Hardware & MHD OTS Map Installation

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We recently had this 2021 Toyota GR Supra in the Whifbitz workshop for a solid round of performance and handling upgrades – and the results speak for themselves.

The customer came to us looking to unlock the real potential of the B58 engine while improving sound, stance, and overall driving feel. Here’s what we carried out.

Modifications Installed

  • Customer-supplied Valvetronic exhaust
    – Massive improvement in sound with valve control for the best of both worlds
  • Whifbitz Sports Cat
    – Improved exhaust flow and performance
  • Eibach Lowering Springs
    – Reduced ride height for a sharper stance and improved handling
  • Wheel Spacers
    – Perfected the fitment to really fill the arches
  • ECU Bench Unlock
    – Required for tuning the locked ECU on the GR Supra
  • MHD Stage 2 Off-The-Shelf Map Installed
    – Reliable, proven performance upgrade

Dyno Results

With the hardware upgrades and MHD Stage 2 OTS map, the Supra achieved:

  • 419 WHP which is approximately 499 BHP at the flywheel

All figures were recorded on our dyno.

https://www.youtube.com/shorts/wbb1ksrzaFA

The Result

This GR Supra now delivers a noticeable performance uplift, a far more aggressive exhaust note, and a much improved stance — all while retaining the reliability of an off-the-shelf calibration.

If you’re looking for Supra upgrades, ECU bench unlocking, or MHD software installation, get in touch with the Whifbitz team.

📍 South Wales & South West specialists
📩 Contact us to discuss your setup

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