MHI Honda 2.0L Stage 2 Turbo Upgrade

The MHI Stage 2 Turbo Upgrade is the most reliable bolt-on turbocharger solution for the Honda K20C1 platform. Built by Mitsubishi Heavy Industries—the same manufacturer that supplies Honda with the OEM turbo—this upgrade delivers genuine power gains without sacrificing spool, drivability, or long-term durability.

Using larger and more efficient compressor and turbine wheels, the Stage 2 unit comfortably supports 400hp on pump fuel and has the headroom to push past 500hp when tuned on ethanol or race fuel. Because the housing and mounting points remain identical to the factory turbo, installation is straightforward and uses all of the factory lines, brackets, sensors, and heat shields.

Key Features

• True bolt-on upgrade using OEM-style housings
• Supports 500+ hp with ethanol or race fuel
• Fast spool and strong midrange, similar to stock response
• 65mm 5+5 billet compressor wheel (+7mm over OEM)
• 52mm Inconel turbine wheel (+5mm over OEM)
• Made by Mitsubishi Heavy Industries (Honda’s OEM turbo supplier)
• Perfect upgrade for tuned FK8 and FL5 Type R builds in Australia

Performance

• Approx. +33% gain on pump fuel (around 400hp)
• Up to +60% gain possible (500+ hp) with ethanol / race fuel
• Full spool characteristics similar to the OEM turbo

Installation

This is a direct bolt-on turbocharger. No custom fabrication, no extra fittings, and no housing modifications are required. All factory oil lines, coolant lines, heat shields, and brackets are reused, making this upgrade ideal for Australian enthusiasts wanting big gains without the complexities of a full custom turbo kit.

For best performance, supporting mods are recommended:

• Hondata Fuel System Upgrade
• XDI High-Flow Direct Injection Pump
• Upgraded intercooler for Australian summer conditions

Fitment

• Honda Civic Type R FK8 (2017+)
• Honda Civic Type R FL5 (2023+)
• Honda Accord 2.0T (2018+)
• Acura RDX 2.0T (2019+)
• Acura TLX 2.0T (2019+)

This turbo is compatible with these platforms when using the FK8-style downpipe. For tuning on Hondata, refer to Hondata’s guide for vehicles running the FK8 MHI turbo upgrade.

For assistance with selecting supporting mods or tuning in Australia, feel free to contact us.