Wagner Tuning BMW/Toyota B58 EVO1 Intake Manifold Fuel Rail

The Wagner Tuning B58 EVO1 Intake Manifold + Fuel Rail is a high-flow upgrade designed for BMW and Toyota vehicles running the first-generation B58 engine. It replaces the restrictive OEM manifold with a larger, more efficient design that improves airflow, stabilises charge distribution and supports higher power levels.

Supplied with Wagner’s billet aluminium fuel rail, this version provides the increased airflow and fuelling headroom needed for high-boost, hybrid turbo and ethanol-compatible builds — without being a full MPI "kit". Ideal for drivers who already have supporting hardware or intend to build their own MPI system.

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Key Features

• Enlarged aluminium plenum for improved airflow and charge volume

• High-flow runner design for stronger top-end power

• Significantly reduced pressure drop vs OEM manifold

• Billet aluminium fuel rail included (for MPI/increased fueling support)

• Ideal for hybrid turbo and high-boost B58 builds

• Improved airflow consistency across all cylinders

• Integrated ports for optional MPI injector installation

• TIG-welded, high-strength construction

• Direct OEM replacement retaining factory sensors

• Suitable for fast-road, drag, and track applications

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Compatibility

BMW B58 (Gen 1) Models

• M140i (F20/F21)

• M240i (F22/F23)

• 340i / 440i (F30/F32/F36)

• 540i / 640i (early B58 variants)

• X3 M40i / X4 M40i (B58 Gen 1)

Toyota

• GR Supra A90 / A91 (3.0 B58 Gen 1)

(Not compatible with B58TU/B58 Gen 2 G-Series vehicles.)

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Ideal For

• Stage 2+ and hybrid-turbo B58 builds

• Cars running ethanol blends requiring additional fuelling capability

• Supra and BMW M Performance models used for fast-road, drag or track events

• Drivers wanting improved airflow stability and higher RPM efficiency

• Owners planning an MPI conversion (injectors/lines added separately)

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

The OEM B58 manifold restricts airflow and struggles to maintain consistent charge distribution at higher boost levels. The Wagner EVO1 manifold solves these issues with a far larger plenum, smoother internal flow paths and greater overall volume — giving the engine the ability to breathe properly at elevated power levels.

Including the billet fuel rail provides the fuelling headroom needed for high-boost or ethanol setups, without forcing customers to buy a complete MPI kit. It offers flexibility for custom builds, modular MPI setups, and tuning strategies that require more fuelling overhead.

Wagner’s precision manufacturing and proven durability make the EVO1 one of the most trusted intake solutions for serious B58 performance builds.

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Installing / Notes

• Direct-fit on B58 Gen 1 engines

• Professional installation recommended

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

• ECU tuning required when enabling MPI fuelling

• Works with OEM or upgraded cooling/chargecooler systems