Arai AY0439 Wild Card Sequential EFI Master Kit 500HP

The Wild Card 2 Sequential EFI Master Kit is a complete fuel injection conversion system engineered for classic V8 engines. This 500 HP rated master kit provides everything needed for a full carb-to-EFI conversion, including a complete fuel delivery system matched to the EFI components.

True Sequential Multi-Port Injection:

Unlike traditional throttle body injection systems that spray fuel above the throttle blades, the Wild Card 2 delivers precise fuel metering to each individual cylinder through sequential multi-port injection. This technology provides superior throttle response, balanced fuel distribution, and improved power delivery across the entire RPM range.

Key Features:

• 32-bit automotive-grade ECU with self-learning capability for automatic fuel map tuning
• 36 lb/hr fuel injectors (8) with choice of EV1 or EV6 connectors
• Complete wiring harness with all necessary sensors
• Handheld controller with setup wizard and real-time monitoring
• Customizable firing order setup for compatibility with various V8 engines
• Requires 7+1 Hall-effect distributor for crank and cam synchronization
• 1000 CFM throttle body for optimal airflow
• Dual wideband O2 sensors (Bosch LSU 4.9) for precise fuel control
• Complete fuel delivery system included (pump, filters, regulators, lines, fittings)
• Supports 43-60 PSI fuel pressure in return or returnless configurations

Advanced Tuning Capability:

The self-learning ECU automatically fine-tunes fuel maps for most street builds. For aggressive setups with high-lift cams, nitrous, or forced induction, free laptop software provides full manual tuning access. The ECU supports injectors up to 500 lb/hr and is scalable for boost applications up to 315 kPa.

This system is designed for racing use and vehicles not subject to emissions regulations. Installation can typically be completed in a weekend by enthusiasts with basic mechanical skills.