Product Update: Due to the discontinuation of the Haltech Elite 1500 ECU, KPower is transitioning this product to accommodate the new Haltech S2 ECU and wideband sensor.

All harnesses and packages ordered after August 19, 2026 will ship configured for the Haltech S2 ECU and, where applicable, include the S2 ECU and wideband sensor.

Some products may experience extended lead times during this transition. Please contact us before ordering if you would like a current lead-time estimate.

The harness in this package is made to order, please allow a few weeks for production and shipping.

Our new Haltech-compatible electronics package is the result of a couple years of development, and is a giant leap forward for our NA/NB KMiata product line.

This complete solution transforms and streamlines the way K swaps are wired. At the center of this package is a Haltech Elite 1500 standalone ECU, giving users a wide range of features previously only available with a significant amount of custom wiring. 

Our extensive all-in-one KMiata wiring harness adapts the ECU to the engine and chassis, and greatly simplifies the wiring for the swap. It's built from the highest quality components: new OEM connectors, Teflon insulated wire, and Raychem DR-25 loom. Wire splicing is only needed to attach the chassis subharness to the gauge cluster for full OEM functionality. 

This package includes the following:

• Haltech Elite 1500 ECU
• KMiata all-in-one swap harness with built in fuse box
• KMiata chassis subharness
• Fuel injector subharness with your choice of connector
• Options for either cable or drive-by-wire throttle control
• Haltech CAN wideband controller and sensor
• Bosch oil pressure and temperature sensor with machined adapter
• Fuse box mounting bracket

Important Notes:

• All products are designed for off-road motorsports use only. Users are responsible for complying with all local laws in their county, state, and country.
• In order to greatly simplify the wiring layout, NA Miata users will need to drill a 2” hole in the center of the firewall to mimic the NB harness opening. 
• Drive-by-wire customers should add our Fit Pedal Adapter to their order
• This package replaces our original electronics solution consisting of Hondata KPro ECU, conversion harness, and KPower RWD engine harness. If you'd like to use KPro, please order our original conversion harness and engine harness of your choice. Confused on ECU and wiring options?  Check out our blog for the Miata and universal applications!

KPower Recommended Supporting Products:

• KPower Flex Fuel Kit