Haltech Nexus S3 ECU & Mazda Miata Mazdaspeed 2004-2005 Plug 'n' Play Adapter Harness Kit (HT-651350)

The Miata Mazdaspeed has more in it than the factory ECU was ever going to release.

The Mazda Miata Mazdaspeed is a capable platform, but factory engine management puts a ceiling on what's possible. The Tuned By Shawn PNP Wiring Harness Kit for the Haltech Nexus connects directly to your factory harness without any permanent modifications, giving the Haltech Nexus full standalone engine control. No cutting, no splicing, fully reversible.

Advantages

• Throttle response that's direct and immediate, not filtered through conservative factory mapping
• Fuel and ignition timing calibrated precisely to your actual setup
• Consistent power delivery that doesn't change with heat or temperature
• Idle stability that's locked in regardless of ambient temperature
• A tune that actually reflects your build and your intentions for the car

Features

• Plug-and-play fitment for 2004-2005 Mazda Miata Mazdaspeed, manual transmission
• Compatible with Haltech Nexus R3, R5, S2, and S3 ECUs
• No cutting or splicing of factory wiring
• OEM-quality connectors, USA-built by Boomslang Fabrication
• Fully reversible, factory harness preserved
• For competition and off-road use

The Details

Built specifically for this vehicle's connector layout with OEM-spec connectors and correct wire gauge throughout. Your factory harness stays completely untouched and the car can return to stock at any time. The Haltech Nexus takes full engine control once installed, giving your tuner a clean vehicle-specific foundation to build a proper map from.

Kit Includes

• 1x Boomslang PNP wiring harness for 2004-2005 Mazda Miata Mazdaspeed
• Haltech Nexus S3 ECU
• Air Temp Sensor - Small Thread Thread: M14 x 1.5

Fitment

2004-2005 Mazda Miata Mazdaspeed, Manual Transmission.