Hondata KPro V4 for 02-04 K-Series Engine

Hondata KPro V4 ECU System – For K Swaps & Tuning

The Hondata KPro V4 is a powerful, fully programmable ECU solution designed for 2002–2004 Acura RSX, 2002–2005 Honda Civic Si, and 2002–2004 Honda CR-V factory ECUs. This system is the ultimate tuning platform for K-series engines, offering unmatched tuning flexibility, data logging, and advanced control features—all packed inside a modified factory ECU. Whether you're tuning a turbocharged K20 or building a high-compression all-motor setup, KPro V4 provides the tools to get the job done right.

The KPro V4 fits directly inside your OBD2 K-Series ECU and connects to a Windows-based laptop via USB. Using KManager software, you can edit fuel and ignition maps, adjust cam angles, set launch control, and perform real-time tuning. It's also one of the only systems on the market that allows you to disable the immobilizer, making it essential for any K-Series engine swap.

PRB ECU cores are now available. Using a PRB ECU allows use of nitrous and boost controls within Hondata. This core is only available while supplies are in stock, so if the product shows unavailable, please contact us via email to purchase. 

Why KPro is the Standard for K Swaps

For nearly two decades, Hondata KPro has been the most trusted tuning solution for Honda and Acura K-Series swaps. Its reliability, user-friendly interface, and deep feature set have made it a staple in the engine swap and tuning community. Whether you're installing a K20 in an older Civic or optimizing a street or race setup, KPro V4 offers unmatched control and flexibility.

KPro V4 Features:

• Fits inside factory ECU
• Designed and assembled in the USA
• USB connection for fast tuning and datalogging
• 8MB onboard datalogging (10–215 minutes)
• Live tuning and auto-tune capabilities
• Bluetooth support and Hondata Mobile app
• Built-in calibrations for common engine combos
• Launch control with anti-lag
• Expanded ignition and fuel tables (up to 11,000 rpm, 60 psi boost)
• Injector size and fuel trim adjustments
• Supports stock or aftermarket wideband sensors
• PWM boost control output
• Engine protection: lean AFR, overboost, low oil/fuel pressure
• Ethanol content sensor (Flex Fuel) support
• TPS-based map lookup for ITBs
• Alternate speed sensor input
• Dash output via serial and CAN

KManager Software Capabilities:

• High/low speed 16x20 ignition and fuel tables
• Multi-cam angle tuning for VTEC/VTC
• Rev limiter with fuel cut
• Adjustable VTEC engagement by load and throttle
• Idle speed, air temp, and boost cut adjustments
• Gear-based fuel/ignition trim
• Multiple general-purpose outputs (nitrous, boost, etc.)
• Onboard datalogging trigger conditions

Fitment:

• 2002–2004 Acura RSX (Base & Type S)
• 2002–2005 Honda Civic Si
• 2002–2004 Honda CR-V (Manual Transmission)

Important Notes:

• Requires a compatible Honda/Acura ECU (PRB, PND, PNF, PRA, PRC, PRD, PPA, PPL)
• ECU core availability may delay fulfillment by 6-8 weeks
• For off-road/racing use only – not legal for use on public roads in the USA

To complement your Hondata KPro V4 system, a wide range of accessories are available to further enhance functionality and ease of installation. Popular add-ons include ECU covers for a clean and secure mounting solution, traction control modules for added grip on track or street, and upgraded MAP sensors to support higher boost levels. These accessories allow you to tailor your KPro setup to your specific build and performance goals.

All Hondata FlashPro sales are final once the product has been received. Due to the nature of tuning devices and licensing, Hybrid Racing does not accept returns on used or potentially used FlashPro units. Please confirm compatibility and useage before purchasing, and contact us with any questions prior to ordering.  

When precision tuning and complete control over your K-series build is the goal, the Hondata KPro V4 delivers with race-proven technology and unmatched features. Trusted by tuners, racers, and engine swappers around the world, KPro is the gold standard for Honda performance tuning.

*Current Lead Time for KPro Conversions is 6-8 Weeks