R44 BMW G80/G81 M3, G82/G83 M4 & G87 M2 S58 Stage 2+ Port Injection Fueling Package (720 WHP+)

Unlock the next level of performance with the R44 Stage 2+ Port Injection Fueling Package, engineered for S58-powered BMWs already running Stage 2 hardware and software. Designed to support builds targeting 720+ wheel horsepower (approximately 850+ bhp), this comprehensive kit provides the components needed to safely introduce port injection and ethanol capability to your G8X platform.

Whether you're looking to push the limits of a hybrid turbo setup or prep for full-frame turbo upgrades, this package ensures precise fuel delivery, advanced control, and high ethanol compatibility. The core of the system features a Precision Raceworks port injection kit — available for both factory and CSF intake manifolds — paired with Injector Dynamics high-flow fuel injectors and the powerful MOTIV ReFlex+ standalone controller.

To support ethanol blends like E50–E85, the kit also includes a genuine Continental ethanol content sensor, Precision Raceworks AN fittings, and a plug-and-play ReFlex+ installation harness by Mike Ball, available for both LHD and RHD vehicles.

This package transforms your S58 engine into a fully flex-fuel capable, high-output system ready for serious road and track use.

Key Features:

• Designed for G8X S58 BMWs already running Stage 2
• Supports 720+ WHP with appropriate tuning and turbos
• Enables high-precision port fuel injection
• Ethanol-compatible (E30–E85 blends) with real-time monitoring
• Plug-and-play harness options for LHD and RHD
• High-quality components from trusted performance brands

What’s Included:

• Precision Raceworks S58 Port Injection Kit (Standard or CSF version)
• Injector Dynamics Fuel Injectors for S58/B58
• MOTIV ReFlex+ Control Unit
• Continental Ethanol Content Sensor
• Precision Raceworks 5/16” Ethanol 360° AN Fittings
• Mike Ball Plug & Play ReFlex+ Installation Harness (LHD or RHD)

Compatibility:

• BMW G87 M2 Coupe
• BMW G80 M3 Saloon
• BMW G81 M3 Touring
• BMW G82 M4 Coupe
• BMW G83 M4 Convertible

For use on vehicles already equipped with Stage 2 tuning and suitable supporting mods.