Description
The B58 Gen2 & S58 Fuel Pressure Upgrade Kit BETA is the ultimate solution for those seeking to gain direct control over fuel pressure and fuel trims on their B58 Gen2 and S58 platforms. This kit is especially beneficial for manual transmission vehicles or those running high E85 mixtures on a locked ECU. It provides a high fuel pressure connection to the JB4, offering precise control and enhanced tuning capabilities.
The upgrade kit is simple to install and includes a replacement JB4 board along with a fuel pressure connector harness that attaches seamlessly to your existing JB4 setup. Please note, this kit is not compatible with Gen1 B58 motors.
For customers who purchased their JB4 from BMS or an authorized reseller, a $75 core refund is available upon return of the original JB4 board. To qualify for the refund, the original board, along with a copy of the original purchase receipt and the upgrade kit order number, must be returned within 45 days.
Vehicle Fitment:
BMW 2 Series
- 2022+ B58 G42 BMW M240i, M240i xDrive, and M240xi
- 2023+ S58 G87 BMW M2
BMW 3 Series
- 2019+ B58 G20/G21 BMW M340i, M340i xDrive, and M340xi
- 2021+ S58 G80 BMW M3
- 2021+ S58 G80 BMW M3 Competition
BMW 4 Series
- 2021+ B58 G22/G23/G26 BMW M440i, M440i xDrive, and M440xi (including Gran Coupe)
- 2021+ S58 G82 BMW M4
- 2021+ S58 G82 BMW M4 Competition
- 2022+ S58 G83 BMW M4 Convertible
Toyota Supra
- 2020-2025 GR Supra Mk5 B58 3.0L 6 cyl.
Product Specifications:
- Product Type: Fuel Pressure Upgrade Kit
- Compatibility: B58 Gen2 & S58 Platforms
- Installation: Easy installation with replacement JB4 board and harness
- ECU Compatibility: Works with locked ECUs for E85 mixtures
- Core Refund: $75 for original JB4 board (conditions apply)
Unlock the full potential of your B58 or S58-powered vehicle with the B58 Gen2 & S58 Fuel Pressure Upgrade Kit BETA, bringing precision and control to your tuning.
