Nexus S3 Plug 'n' Play Adapter Harness Kit - Mazda RX7 FD S6 (HT-213307)

Everything a Series 6 FD needs to run on a Haltech Nexus S3, in one box, with no factory wires cut.

The Haltech Nexus S3 Plug 'n' Play Adapter Harness Kit for the Mazda RX-7 FD Series 6 pairs the Nexus S3 ECU with the vehicle-specific adapter harness (HT-186338). The adapter carries the FD's two-row factory ECU connectors on one side and the Nexus plugs on the other, so the S3 drops in where the stock ECU sat and the factory loom is never touched. It takes full standalone control of fuel, ignition, boost and the 13B-REW's sequential twin-turbo system the moment it is installed, and it is just as happy running a single-turbo conversion.

What You'll Feel

• A rotary that starts on the Haltech base map and is ready to tune the same day
• Sequential twin-turbo control kept, or a single-turbo swap handled by the same ECU
• 4D closed-loop boost control and a built-in wideband controller, so the two things every FD owner watches are on board
• Onboard logging of 300+ channels at 1 kHz for diagnosing the car, not guessing
• A stock harness you can return to at any time

Nexus S3 ECU

• 8 peak-and-hold injector drivers and 8 ignition outputs
• 11 analog inputs (0-5 V, with redundancy)
• 6 PWM-capable low-side outputs and 4 half-bridge outputs (8 A, PWM-capable)
• 1 onboard wideband controller (NTK or Bosch LSU 4.9)
• Internal 4-bar MAP sensor
• 2 CAN ports for dashes, gauges, keypads and expansion
• 128 MB onboard data logging, 300+ channels at up to 1 kHz
• 4D closed-loop boost control, flex fuel, launch and traction control, anti-lag
• Transmission control for Ford AODE/4R70W, GM 4L60E and 4L80E, Toyota A340E, Lenco and Liberty

Features

• Injection-moulded plug 'n' play adapter with the FD3S Series 6 two-row ECU connector layout
• No cutting or splicing of the factory harness, fully reversible
• Includes an M14 x 1.5 air temp sensor with plug and pins, so the ECU sees real intake temperature from day one
• Auxiliary I/O 16-pin Tyco plug and pins for extra sensors and outputs
• Haltech quick-start guide walks through the fit
• Backed by the Haltech limited warranty

The Details

Part number HT-213307. This kit is for the FD3S Series 6 (1992-1995) RX-7 with the two-row factory ECU plug and a manual transmission only. Series 7 and Series 8 cars (1996-2002) use a different ECU connector and need the Series 7/8 kit (HT-213306). Already own a Nexus S2 or S3? The adapter harness on its own (HT-186338) is listed separately. Unsure which series you have, or running an automatic? Send us the VIN or a photo of the ECU plug before ordering and we will confirm.

Kit Includes

• 1x Haltech Nexus S3 ECU
• 1x Injection-moulded plastic plug 'n' play adapter harness
• 1x M14 x 1.5 air temp sensor with matching plug and pins
• 1x Auxiliary I/O 16-pin Tyco plug and pins

Applications

• 1993-1995 Mazda RX-7 FD3S Series 6, 13B-REW, manual transmission (JDM 1992-1995)
• Factory sequential twin turbo or single turbo conversion

Tuned By Shawn is a Platinum Haltech Dealer with in-house wiring and remote tuning. Add a remote tune or a wideband, fuel and oil pressure sensor pack and we will have the S3 configured for your FD before it ships.