Mitsubishi Released Turbo Upgrade for Honda K20C1
Owners can now boost performance on the K20C1 engine using a new Stage 2 turbocharger upgrade from the OEM supplier.
Updated on Sept. 21, 2026 in Performance Vehicles
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Mitsubishi Heavy Industries has released a Stage 2 turbocharger upgrade for the Honda K20C1 engine, which powers factory-stock models at 306 horsepower. This aftermarket component offers significant performance gains while utilizing the original factory housing.
Why it matters
The upgrade is designed to improve airflow and boost power without compromising spool time or factory-level reliability. It provides a pathway for enthusiasts to increase output significantly using standard pump fuel.
The unit features a 65mm billet compressor and a 52mm inconel turbine, providing a 33% power increase on standard fuel versus the stock output.
The players
Mitsubishi Heavy Industries
The original equipment manufacturer (OEM) turbo supplier for Honda.
Honda
The automotive manufacturer responsible for the K20C1 engine platform.
The details
The upgrade replaces internal factory components with the larger 65mm billet compressor and 52mm inconel turbine to increase airflow. Installation is designed to be straightforward, utilizing existing factory mounting points and the original housing to avoid the need for custom fabrication.
Timeline
September 21, 2026: The turbocharger upgrade was officially released.
The Home Front
The shift toward bolt-on, OEM-engineered turbo upgrades reflects a broader trend among automotive enthusiasts to favor factory-compatible performance parts over custom builds. This move helps maintain vehicle reliability while meeting the demand for increased power.
Owners interested in this upgrade should verify their specific vehicle configuration to confirm compatibility with the K20C1 engine housing. Because this involves engine performance, ensure all installations are performed by a licensed professional to protect vehicle integrity.
The takeaway
This upgrade allows K20C1 owners to reach up to 500 horsepower using race fuel or ethanol blends. Consult with a qualified mechanic to ensure your current cooling and fueling systems are capable of supporting these increased power levels.
Further reading
For more on optimizing your vehicle setup, visit Performance Vehicles.
Source note: This article includes information reported by InAutoNews.
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