Mazda RX-8 Engine Swap Chassis Jumper DIY | Series 2 2009-2012 (TBS-00317)

Swapping the engine is the easy part. Keeping the RX-8's chassis happy is where the wiring fight starts.

The Series 2 RX-8 leans even harder on its factory electronics, and dropping in a Haltech ECU leaves relays, switches, and CAN traffic with nobody answering. The Mazda RX-8 Engine Swap Chassis Jumper bridges your Haltech engine management into the Series 2 chassis so the factory functions keep working the way Mazda intended. Built for the DIY wirer handling their own engine harness, it takes the body side off your plate. One clean interface between your swap and your street car.

What You'll Feel

• Fuel pump, fans, and brake and clutch switches working like stock on day one
• No digging through Mazda wiring diagrams to chase CAN and pedal pins
• A swap that still drives like a street car, AC and cruise circuits included
• Clean, serviceable integration instead of mystery splices behind the dash
• More time spent on the engine side, where the fun actually is

Features

• Purpose-built bridge between Haltech engine management and the Series 2 (2009-2012) RX-8 chassis
• Supports the Haltech Nexus S3, R3, and R5
• Retains factory chassis circuits: main relay, fuel pump relay and speed control, fan relays 1 through 5, AC relay and pressure inputs, air pump relay, starter relay ground, and brake, clutch, and cruise switches
• Accelerator pedal position passthrough (APP1 and APP2) for drive-by-wire
• OEM CAN high and low integration plus Haltech CAN power and ground provisions
• Full Connector 1 pinout and pin location map documented below

The Details

An engine swap orphans the body side of the car. The factory PCM used to answer the fuel pump relay, the fans, the pedal, and the CAN messages the rest of the chassis listens for, and once it's gone, those circuits need a translator. The jumper maps your Haltech's I/O to the Series 2 chassis circuits through one purpose-built interface, so you wire the engine side your way and plug the body side in. It's made for builders running their own engine harness who want the chassis integration solved instead of reverse-engineered, and the complete Connector 1 pinout below shows exactly which pins the jumper handles. Compatible Haltech units: Nexus S3, Nexus R3, and Nexus R5.

Kit Includes

1x Mazda RX-8 Series 2 Chassis Jumper

Applications

2009 Mazda RX-8
2010 Mazda RX-8
2011 Mazda RX-8
2012 Mazda RX-8
Chassis: Series 2