The VQ30DE Maxima is an underrated naturally aspirated V6 with real potential when the ECU limitations are removed.
The 1999 Nissan Maxima VQ30DE has real tuning potential, and the factory ECU is the main thing standing between where it is and where it could be. The Tuned By Shawn Boomslang PNP Wiring Harness 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 immediate and proportional, not filtered through conservative factory mapping
- Fuel and ignition timing calibrated to your actual setup
- Consistent power delivery that doesn't change with heat or humidity
- Idle stability that stays locked in across temperature ranges
- A tune built specifically for your engine and modifications
Features
- Plug-and-play fitment for 1999 Nissan Maxima VQ30DE, 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 1999 Nissan Maxima VQ30DE
- Haltech Nexus ECU sold separately
Fitment
1999 Nissan Maxima VQ30DE, Manual Transmission.