Wagner Tuning BMW/Toyota B58 EVO1 Intake Manifold Fuel Rail Kit

The Wagner Tuning B58 EVO1 Intake Manifold Fuel Rail Kit is a high-performance upgrade designed for BMW and Toyota models running the first-generation B58 engine. Engineered to improve airflow, cooling efficiency and fuelling capability, this manifold is built for tuned, high-boost and track-driven B58 applications where the factory manifold becomes restrictive.

With a larger plenum, high-flow runners, integrated provisions for multi-port injection (MPI) and a motorsport-grade fuel rail, the EVO1 manifold provides the airflow and fuelling support required for hybrid turbo builds, ethanol setups and consistent performance under demanding conditions.

Key Features

• Enlarged, high-flow aluminium plenum for improved cylinder filling

• Optimised runner geometry for increased top-end power

• Supports MPI (multi-port injection) – ideal for high-boost or ethanol builds

• CNC-machined billet fuel rail included

• Significant reduction in pressure drop vs OEM manifold

• Increased airflow stability across all cylinders

• Designed for hybrid turbos, upgraded HPFPs and high-power applications

• Direct OEM replacement with factory sensor compatibility

• TIG-welded aluminium construction for excellent durability

• Suitable for both fast-road and track use

Compatibility

BMW B58 (Gen 1) Models

• M140i (F20/F21)

• M240i (F22/F23)

• 340i (F30/F31/F34)

• 440i (F32/F33/F36)

• 540i / 640i (selected early models)

• X3 M40i / X4 M40i (B58 Gen 1 variants)

Toyota

• GR Supra A90 / A91 (3.0 B58 Gen 1)

(Not suitable for B58TU/B58 Gen 2 engines found in newer G-Series BMW models.)

Ideal For

• Tuned B58 builds running Stage 2+, hybrid turbos or ethanol

• GR Supra and M Performance models used for fast-road or track work

• Drivers needing reliable MPI support for higher fuelling demand

• Owners experiencing airflow imbalance or intake restriction on the OEM manifold

• High-boost applications requiring consistent charge distribution and lower IATs

Why Choose the Wagner Tuning B58 EVO1 Intake Manifold Fuel Rail Kit

The factory B58 manifold is designed around efficiency rather than maximum flow, and it becomes a limiting component once boost, turbo size or fuelling demands increase. The Wagner EVO1 manifold solves this with an enlarged plenum, revised runner design and stronger materials capable of supporting significantly higher power levels.

Integrated MPI ports and the included fuel rail allow for improved fuelling safety and headroom — essential for ethanol blends, high boost and big-turbo setups. Wagner’s engineering quality ensures excellent fitment, stable airflow across all cylinders and reliable performance under heat and load.

For B58 owners targeting serious, sustainable power gains, the EVO1 manifold is one of the most effective supporting upgrades available.

Installing / Notes

• Direct replacement for OEM manifold

• Professional installation recommended

• MPI hardware (injectors, lines, controller) not included unless specified

• Custom ECU tuning required when adding MPI

• Works with OEM and aftermarket intercooler/chargecooler systems