Haltech Nexus R3 VCU & BMW M3 1995 Plug 'n' Play Adapter Harness Kit (HT-651503)

The E36 M3 S50B30 is one of BMW's most celebrated naturally aspirated inline-sixes, and standalone ECU support gives you direct access to every parameter that makes it special.

The BMW M3 S50B30 is a precision inline-six in a driver's car, and the factory ECU was never built to support the kind of calibration it deserves. 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

• High-rpm power delivery that's clean and linear all the way to the redline
• Throttle response that's immediate and proportional, without factory ECU filtering
• Ignition and fuel calibrated precisely to your modifications and fuel
• VANOS behavior tuned to your actual RPM targets rather than factory compromise points
• Engine management that genuinely matches what the S50B30 is capable of

Features

• Plug-and-play fitment for 1995 BMW M3 S50B30, manual transmission
• Compatible with Haltech Nexus R3, R5, S2, and S3 ECUs
• Requires Haltech coil drivers (sold separately)
• 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 1995 BMW M3 S50B30
• Haltech Nexus R3 VCU
• Air Temp Sensor - Small Thread Thread: M14 x 1.5
• Haltech coil drivers required, sold separately

Fitment

1995 BMW M3, Manual Transmission.