Haltech Nexus S2 Plug 'n' Play ECU and Adapter Harness Kit - Mazda MX5 NB

The Haltech Nexus S2 Plug 'n' Play Adapter Harness Kit (HT-212303) replaces the factory ECU on the Mazda MX-5 NB with a Nexus S2 ECU, using a factory-matching adapter harness so you avoid cutting the original loom.

The Nexus S2 succeeds the Elite 1500 and provides 4 peak/hold injector drivers, 4 low current ignition outputs, 6 low side PWM-capable DPOs, 4 push-pull/half bridge outputs (8A, PWM capable) and 1 ECR output. It reads 11 x 0-5V analog inputs with redundancy and switchable 5V pullup, differential trigger and home inputs with adjustable thresholds and glitch filters, and 6 synchronous pulsed inputs. It has 1 onboard wideband controller supporting NTK and LSU 4.9, 1 onboard 4 bar MAP sensor, 2 CAN ports with switchable termination, and onboard logging of up to 300 channels at rates up to 1ms (1kHz) with 128MB of internal memory. The kit fits the 3-plug, 3-row factory ECU used on the MX-5 (Miata) NB ADM Special Edition (factory turbo), USDM Special Edition (factory turbo), VCT and non-VCT models (2000-2004 Australia, 2001-2005 USA), manual transmission only.

• Plug 'n' play replacement for the factory ECU, no factory harness modification needed
• Onboard wideband controller supporting NTK and LSU 4.9
• Onboard 4 bar MAP sensor and 2 CAN ports with switchable termination
• Manual transmission only

In the box:

• Nexus S2 ECU
• Injection moulded plastic plug 'n' play adapter harness
• M14 x 1.5 air temperature sensor with matching plug and pins
• Auxiliary I/O 16 pin Tyco plug and pins

Suits:

• Mazda Miata (MX-5) NB ADM Special Edition (factory turbo), USDM Special Edition (factory turbo), VCT and non-VCT (2000-2004 Australia, 2001-2005 USA), 3-plug 3-row factory ECU

Please note: Manual transmission only. Using a Nexus S2 instead of a Nexus S3 reduces some of the car's factory functionality, see the quick start guide for detail.

• 1998 to 2005 Mazda MX5 (NB6C)
• 1998 to 2005 Mazda MX5 (NB8C)