Eventuri BMW M340I/M440I (G20/G21/G22/G23/G26) Carbon Fibre Intake System

Give your B58 turbo real room to breathe with the Eventuri Carbon Fibre Intake System, purpose-built for the G20/G22-generation M340i and M440i. Because the intake sits right next to the exhaust manifold on this platform, heat soak is the main threat to performance - Eventuri's fully sealed carbon airbox, backed by a gold-reflective heat shield, blocks radiative heat transfer and keeps intake air temperatures stable even under sustained load.

A sealed system usually means a single restrictive air feed, so Eventuri added a second cold air inlet drawing from the gap between the wheel arch and chassis - visible as a scoop behind the front wheel after installation - giving the turbo a larger area to pull from. Built around patented Venturi housings with Gen 2 bespoke filters for laminar airflow, the results speak for themselves: independent testing on the same B58 platform (via a B58 Supra with matching hardware) showed gains exceeding 20hp across a wide portion of the rev range, with further dyno validation from a UK stage 2 tune confirming the pattern.

Works with: Stock ECU - available in V1 (pre-November 2018, MAF sensor) and V2 (post-November 2018, temperature sensor) variants to match your car's specific setup.

Why Choose This Intake System

• Fully sealed carbon airbox - prevents heat soak from the nearby exhaust manifold
• Dual cold air feed design - second inlet from the wheel arch gap reduces flow restriction
• Gold-reflective heat shield - minimises radiative heat transfer for stable IATs
• Patented Venturi housings with Gen 2 filters - laminar airflow, reduced turbo drag
• Independently dyno-tested gains - up to 20hp+ across a wide RPM range on supporting mods
• Available in V1/V2 variants - matched to your car's build date and sensor type

Compatibility

• BMW G20 M340i / M340i xDrive (B58)
• BMW G21 M340i Touring (B58)
• BMW G22 M440i (B58)
• BMW G23 M440i Convertible (B58)
• BMW G26 M440i Gran Coupe (B58)