Precision Raceworks S58 Port Injection Kit – BMW M2 / M3 / M4 / X3 M / X4 M (G8x / F9x)

OVERVIEW

The S58 is a direct-injection engine, and the direct-injection side is the first part of the fuel system to run out of headroom on a hard-tuned car. Once boost and airflow climb past what the high pressure pump and factory DI injectors can supply, the engine runs out of fuel before the turbos run 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 make up the difference.

The Precision Raceworks S58 Port Injection Kit is the hardware side of that conversion for every S58 engine and it works with the stock S58 intake manifold, so there is no custom manifold to buy. The rail is AN6 through the bore and carries a lock on every injector that secures it to the rail and takes the upward load off the plastic manifold screws; the rail can be removed without spilling fuel. All fittings are billet, the lines are smooth bore PTFE with stainless and nylon braid, and the kit ships with everything needed so no custom fuel lines are required. The whole assembly is 100% E85 compatible.

Injector kits use genuine Bosch Motorsport injectors modified by Precision Raceworks, flow matched statically and dynamically to 2% or better, with a certificate of conformance giving the flow data for your set. The 750cc set flows 750cc at 43.5psi (1050cc at 72.5psi) and suits cars that need supplemental fuel on pump gas or an ethanol blend; the 950cc set flows 950cc at 43.5psi (1226cc at 72.5psi) for larger turbo builds and full E85. The No Injectors option supplies the rail, fittings and lines only. 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. Black, Blue and Silver are the same kit; the anodising changes only the part number.

SPECS

• Weight: 3.5 lbs
• Engine compatibility: all S58 engines, stock intake manifold compatible
• Injector brand: genuine Bosch Motorsport, modified and flow matched by Precision Raceworks
• Injector type: EV14 Compact
• Advertised flow, 750cc option: 750cc @ 43.5psi, 1050cc @ 72.5psi
• Advertised flow, 950cc option: 950cc @ 43.5psi, 1226cc @ 72.5psi
• 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
• Fuel rail: AN6 through the bore, AN6 ORB female connection, locking injector retainers
• Fittings: billet, no plastic fittings
• Fuel line: smooth bore PTFE with stainless braid and nylon braid, no rubber line
• Fuel delivery: direct to the intake valves
• 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

• AN6 fuel rail with locking injector retainers
• Six Precision Raceworks port injectors in the flow rate selected, Bosch Motorsport based and flow matched (not supplied with the No Injectors option)
• Smooth bore PTFE fuel lines with stainless and nylon braid
• Billet AN6 fittings
• Mounting and installation hardware
• Certificate of conformance with measured injector flow data (injector kits only)
• No Injectors option: rail, fittings, lines 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.
• Precision Raceworks PNP ReFlex+ harness for S58 / B58 (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).

Installation

• Precision Raceworks S58 Port Injection Kit installation guide (video)
• Motiv ReFlex+ / ReFlex LITE controller manuals (Motiv Motorsport)
• Precision Raceworks does not publish a PDF install guide for this kit; the video above is the manufacturer's installation reference. 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 G8X S58 Upgraded Hybrid Primary Fuel Pump, the Precision Raceworks Stand-Alone AFS (M3 / M4 G8X, M2 G87 or X3 M / X4 M), the G-Chassis Universal Fuel Line Kit with Filter (601-0309) and the G-Series Port Injection Fuel Line for Manifold Kit (201-0358); the two fuel lines are sold separately (not stocked by Speed Logic).
• This kit fits the stock S58 intake manifold; no custom or aftermarket manifold is required.
• Colour and injector size 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

• 601-0270 — Black, 750cc
• 601-0271 — Blue, 750cc
• 601-0276 — Silver, 750cc
• 601-0272 — Black, 950cc
• 601-0273 — Blue, 950cc
• 601-0277 — Silver, 950cc
• 601-0278 — Black, No Injectors
• 601-0279 — Blue, No Injectors
• 601-0280 — Silver, No Injectors

VEHICLE APPLICATIONS