Hondata KPro V4 for 02-04 K-Series Engine

Hondata KPro V4 ECU System, For K Swaps and Tuning

If you want real control over a K Series, the Hondata KPro V4 is the move. It converts a factory OBD2 ECU into a fully programmable setup for the 2002 to 2004 Acura RSX, 2002 to 2005 Civic Si, and 2002 to 2004 CR V manual ECU. Think of it as the Honda ECU performance mod that lets you tune like you actually mean it, whether your car is a stock K20 with bolt ons or a turbo K swap that needs proper fuel, ignition, and safety strategies.

KPro V4 installs inside your factory ECU and plugs into a Windows laptop over USB. In KManager you can change fuel and ignition tables, set VTEC and VTC behavior, dial launch control, and tune live while the engine runs. It also lets you disable the immobilizer, which is a big deal on swaps, and a big reason people order Hondata KPro when they do a Hondata KPro for K Swap.

PRB ECU cores are now available. If you run a PRB ECU you can use Hondata nitrous and boost controls.

Why KPro is the Standard for K Swaps

People keep calling it the standard because it works and because tuners already know it. KPro V4 gives you the knobs you need without forcing you into weird workarounds. We run these exact parts on our own cars, because we like predictable starts, clean drivability, and logs that make diagnosing issues fast instead of a guessing game.

KPro V4 Features:

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

KManager Software Capabilities:

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

Fitment:

• 2002 to 2004 Acura RSX, Base and Type S
• 2002 to 2005 Honda Civic Si
• 2002 to 2004 Honda CR V, manual transmission

Important Notes:

• Requires a compatible Honda or Acura ECU core, PRB, PND, PNF, PRA, PRC, PRD, PPA, PPL
• ECU core availability can add 6 to 8 weeks to fulfillment
• For off road and racing use only, not legal for public road use in the USA

If you want to round out your setup, the usual add ons make life easier, ECU covers for clean mounting, traction control modules if you chase consistency, and MAP sensors if you plan to run more boost. KPro V4 ECU for RSX builds, boosted swaps, and street cars all benefit from the same thing, good inputs and good logs.

All Hondata KPro sales are final once received. Because licensing and tuning hardware get messy fast, we do not accept returns on used or potentially used units. Confirm compatibility before you buy Hondata ECU, and ask questions before you commit. We can help you pick the right option and get your KPro V4 purchase right the first time.

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

Core ECU Options and SKUs:
SKU: HON-KPRO, Core ECU Required: I Will Send in My Core ECU
SKU: HON-KPRO-WITHECUA, Core ECU Required: HR Will Supply Premium Core ECU (PRB)
SKU: HON-KPRO-WITHECUB, Core ECU Required: HR Will Supply Budget Core ECU (PPA, PND, PNF)
SKU: HON-KPRO-WITHECUC, Core ECU Required: HR Will Supply Auto Core ECU for K Swaps Only (PND Aut)

If you want to order Hondata KPro, pick the core option that matches your build and availability. If you are specifically trying to buy Hondata KPro online, buy Hondata ECU with a supplied core, or lock in a Hondata KPro V4 US unit for a K swap timeline, reach out before checkout and we will help you avoid the wrong core and a long delay.