Precision Raceworks B58 Port Injection Kit – BMW F-Series / G-Series & Toyota GR Supra

OVERVIEW

The B58 is a direct-injection engine, and the direct-injection side is the first thing to run out of headroom on a tuned or big-turbo car. The high pressure pump and factory DI injectors have a finite ceiling; once boost and airflow climb past it the engine runs out of fuel before the turbo runs out of air. Port injection adds a second, independent set of injectors ahead of the intake valves on their own rail, fed from the low pressure side. Direct injection still handles idle, cruise and part throttle as the factory intended, and the port injectors come in under load to supply what the DI system no longer can.

The Precision Raceworks B58 Port Injection Kit is the complete hardware side of that conversion for F-chassis and G-chassis B58 cars, the Toyota GR Supra and the Morgan Plus Six. It fits all B58 Gen 1 and Gen 2 engines including the mild hybrids. The injectors are genuine Bosch Motorsport units, flow matched statically and dynamically to 2% or better, and each kit ships with a certificate of conformance listing the measured flow data for the set in the box. Fuel is delivered in a diagonal pattern so all six cylinders see equal distribution. The supply line is smooth bore PTFE with stainless and nylon braid, and the kit is safe on every pump fuel including full E85.

The 750cc set flows 750cc at 43.5psi (about 1050cc at 72.5psi) and suits stock-turbo and upgraded-turbo cars that need supplemental fuel on pump gas or an ethanol blend. The 950cc set flows 950cc at 43.5psi (1226cc at 72.5psi) and is the choice for larger turbo builds and full E85. The No Injectors option supplies the plate, rail and plumbing only for builders who already own a matched set. Speed Logic also offers the No Injectors kit paired with a matched set of six Injector Dynamics XDS injectors in the same USCAR (EV6) connector the rail is built for. Black and Blue are the same kit; the anodising changes only the part number.

SPECS

• Weight: 3.5 lbs
• Engine compatibility: all B58 Gen 1 and Gen 2 engines, including mild hybrid
• Injector brand: genuine Bosch Motorsport
• Advertised flow, 750cc option: 750cc @ 43.5psi, 1050cc @ 72.5psi
• Advertised flow, 950cc option: 950cc @ 43.5psi, 1226cc @ 72.5psi
• Supported power range (vendor stated): approximately 400whp to 1,000whp depending on injector size and supporting mods
• Fuel compatibility: all known fuels, 100% E85 compatible
• Flow matched: 2% or better, static and dynamic
• Connector type: EV6 (USCAR); works with Motiv ReFlex, AIC and JB4 controllers
• Hardware: full stainless hardware included
• Gaskets: OEM spec manifold gaskets (N54 style)
• Fuel distribution: diagonal, equal distribution to all six cylinders
• Fuel line: smooth bore PTFE with stainless braid and nylon braid
• Injector Dynamics ID1050-XDS option: 1065cc/min @ 3.0 bar, max differential pressure 10.0 bar, all known fuels
• Injector Dynamics ID1300-XDS option: 1335cc/min @ 3.0 bar, max differential pressure 7.0 bar, designed for alternative fuels
• Injector Dynamics ID1750-XDS option: 1728cc/min @ 3.0 bar, max differential pressure 7.0 bar
• Injector Dynamics ID2600-XDS option: 2600cc/min @ 3.0 bar, max differential pressure 9.0 bar, requires a minimum of 11 volts
• Injector Dynamics XDS connector: USCAR (EV6), with offset and slope characterization data supplied with every set

PARTS INCLUDED

• Port injection plate assembly with fuel rail, AN6 ORB plugs pre-installed
• Six genuine Bosch Motorsport port injectors in the flow rate selected, flow matched (not supplied with the No Injectors option)
• Fuel line, smooth bore PTFE with stainless and nylon braid
• Two manifold standoff risers
• Full stainless hardware (M6 Allen screws)
• OEM spec manifold gaskets / plate-to-head O-rings
• Certificate of conformance with measured injector flow data (injector kits only)
• No Injectors option: plate, rail, line and hardware only, no injectors supplied
• Injector Dynamics option: the No Injectors kit plus a matched set of six Injector Dynamics XDS injectors in the flow rate selected

TECH RESOURCES

Required Extras

• Port injection controller, required. The factory DME cannot drive these injectors. Precision Raceworks specifies the Motiv ReFlex Lite or ReFlex+ (ReFlex+ adds CAN bus integration, ethanol sensor, fuel pressure sensor and true flex fuel support): Motiv ReFlex+ I/O Integration – BMW / Toyota A9x (Flying Lead) or the MOTIV ReFlex+ Advanced I/O Integration Kit – BMW B58 / S58 Plug-n-Play.
• Aftermarket two-piece charge pipe, required. The factory charge pipe will not clear the port injection plate. F-chassis B58 Gen 1: Burger Motorsports Elite Aluminum Charge Pipe (F & G Chassis, B58 Gen 1). G-chassis B58 Gen 2 and GR Supra: Active Autowerke Charge Pipe – BMW M340i / M440i (G20) & Toyota GR Supra A90 or Burger Motorsports B58TU Gen 2 Charge Pipe.
• Precision Raceworks PNP ReFlex+ harness for B58 / S58 (201-0409), optional plug-and-play wiring for the ReFlex+ — sold separately (not stocked by Speed Logic).
• Ethanol content sensor and harness, optional, only if running E85 or an ethanol blend with the ReFlex+: Precision Raceworks PNP Ethanol Sensor Harness for MOTIV ReFlex+ (201-0410) — sold separately (not stocked by Speed Logic); GR Supra owners can use the Fuel-It Bluetooth Flex Fuel Kit – Toyota GR Supra.

Installation

• Precision Raceworks B58 Port Injection Installation Manual (PDF)
• Motiv ReFlex+ / ReFlex LITE controller manuals (Motiv Motorsport)
• Precision Raceworks rates this install as not recommended for novice installers. Speed Logic offers professional installation; contact us for a quote.

Notes

• Port injection is fed from the low pressure fuel system. On high-flow or E85 builds confirm the in-tank pump and supply line can keep up; see the Precision Raceworks F-Series F2X / F3X B58 High Performance Fuel Pump (F-chassis), the Precision Raceworks G-Series B58 & Toyota GR Supra Upgraded Hybrid Fuel Pump (G-chassis and GR Supra), the F-Series B58 -6AN Fuel Line (201-0214), the B58 F-Series Port Injection Plate Fuel Line (201-0172) and the G-Chassis Universal Fuel Line Kit with Filter (601-0309); the three fuel lines are sold separately (not stocked by Speed Logic).
• Installation requires trimming the intake manifold; follow the installation manual. Aftermarket two-piece charge pipes may need the silicone coupler adjusted or a longer boot to allow for manifold movement.
• Colour and injector flow rate both change the part number and price; confirm the combination selected before ordering.
• Port injection is a competition and off-road modification. It is not emissions compliant and is not intended for use on pollution controlled vehicles.
• The ID2600-XDS is not compatible with ethers (MTBE, ETBE, TAME) or nitromethane. The ID1050-XDS, ID1300-XDS and ID1750-XDS are compatible with all known fuels. We also sell the Injector Dynamics sets on their own: Injector Dynamics Upgraded Fuel Injectors (ID1050x / ID1300x / ID1750x / ID2600x).
• Price is for the item selected only. Labor, tuning and additional parts are not included.
• Confirm your engine code before ordering.

PART NUMBER

• 601-0175 — Black, 750cc
• 601-0174 — Blue, 750cc
• 601-0187 — Black, 950cc
• 601-0217 — Blue, 950cc
• 601-0205 — Black, No Injectors
• 601-0204 — Blue, No Injectors

VEHICLE APPLICATIONS