Precision Raceworks B58 Gen 2 Port Injection Kit for BMW Z4 M40i G29 and Toyota GR Supra A90
The Precision Raceworks Multiport Injection kit is the go-to B58 Gen 2 fueling upgrade for drivers who want reliable, safe and consistent power on the BMW Z4 M40i G29 and Toyota GR Supra A90. This complete B58 port injection kit adds true MPI for additional fueling headroom, flex fuel and E85 compatibility, and seamless OE-like integration. Once installed, the kit is hidden like factory equipment, yet it unlocks the fueling you need for bigger turbos, hybrid turbos, Stage 2 and Stage 3 builds.
At Nforcd we run this Precision Raceworks B58 MPI kit on in-house builds and customer cars, and feedback has been excellent. Customers choose it for its even fuel distribution, Bosch Motorsport injectors, high quality PTFE fuel lines and stainless hardware. If you are searching for B58 port injection, B58 MPI, Supra A90 port injection, Z4 M40i port injection, or a B58 Gen 2 fueling kit that is 100 percent E85 compliant, this is the proven solution.
Why choose this B58 Gen 2 port injection kit
- Designed for all B58 Gen 2 engines including BMW G29 Z4 M40i and Toyota GR Supra A90 B58.
- Only B58 port injection kit with even fuel distribution across all six cylinders for consistent combustion and safer tuning.
- Genuine Bosch Motorsport injectors, flow matched static and dynamic by an independent lab with certificate of conformance and genuine Bosch product certificate included.
- 100 percent E85 and flex fuel compatible. Supports all known fuels.
- Real-world headroom for builds from roughly 400 whp up to 1,000 whp when paired with suitable hardware and tuning.
- Neat OE-style fitment. Looks factory once installed.
Key specifications
- Engine compatibility: B58 Gen 2 engines. Fits BMW G29 Z4 M40i and Toyota GR Supra A90 B58. If you have a B58D this kit works. For other B58 versions use the Precision Raceworks Gen 1 kit.
- Injector brand: Genuine Bosch Motorsport, flow matched to 2 percent or better for superior consistency.
- Advertised flow - 750 cc: 750 cc at 43.5 psi, 1050 cc at 72.5 psi.
- Advertised flow - 950 cc: 950 cc at 43.5 psi, 1226 cc at 72.5 psi.
- Fuel distribution pattern: Diagonal equal distribution across all cylinders.
- Connection type: EV6 US Car connector. Works with AIC-6 and JB4 controller setups.
- Fuel lines: Smooth bore PTFE with stainless braid and nylon braid. Safe for all fuel types.
- Gaskets: OEM spec manifold gaskets used in the port injection plate are included.
- Hardware: Full stainless hardware included.
- Weight: 2.9 lbs.
What is included
Everything needed to add multiport injection to your B58 Gen 2 platform, including the Precision Raceworks port injection plate, flow matched Bosch Motorsport injectors when selected, PTFE braided fuel lines, OEM spec gaskets, and full stainless hardware. Detailed injector flow data and certificates are supplied for optimal tuning.
Controller compatibility
Pair this B58 MPI kit with your preferred injector controller and you are ready to go. Our favourite is the AIC-6, which is compatible with all B58 cars and is widely used in the community. EV6 connectors also work with JB4 controller configurations.
Requirements and notes
- Aftermarket 2 piece charge pipe required.
- Professional installation and custom calibration are recommended for best results, especially when running ethanol or big turbo setups.
Vehicle fitment
- BMW Z4 Series G29 Z4 B58 2017+ including Z4 M40i.
- Toyota GR Supra A90 B58 2020+.
If your car uses the B58D engine this kit fits. For other B58 variants, please select the Precision Raceworks BMW B58 Gen 1 port injection kit.
Fitting service at Nforcd
Want this installed and set up by specialists who know B58 fueling inside out? Book professional fitting with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check before dispatch
We verify compatibility before shipping. Provide your UK registration or the last 7 digits of your VIN at checkout so we can confirm the correct fitment for your Z4 M40i or GR Supra A90 B58.
Part numbers and options
- 601-0172 - 750 cc injector flow rate, Black.
- 601-0185 - 950 cc injector flow rate, Black.
- 601-0203 - No injectors, Black.
- 601-0168 - 750 cc injector flow rate, Blue.
- 601-0184 - 950 cc injector flow rate, Blue.
- 601-0202 - No injectors, Blue.
Manufactured by
Precision Raceworks
Why buy from Nforcd
We have extensive hands-on experience with the Precision Raceworks B58 Gen 2 port injection kit on BMW Z4 M40i and Toyota GR Supra A90 platforms, and our customers consistently report smooth drivability, strong top-end fueling and reliable E85 performance. For expert advice, installation and tuning guidance, speak to the Nforcd team.
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