HKS 4299-RA003 F-CON Mixture Controller for F-CON iS and V Pro

The HKS 4299-RA003 Mixture Controller is an optional accessory device designed for use with the HKS F-CON fuel and ignition management system family. It allows tuners to adjust the air/fuel mixture — setting the amount of fuel increased or decreased — in real time, providing hands-on control during tuning sessions.

Compatible with the HKS F-CON iS and HKS F-CON V Pro piggyback ECU systems, this controller integrates seamlessly into existing F-CON setups without requiring additional modification to the base system. The included harness makes connection straightforward for professional installers.

Key Features:

• Real-time mixture adjustment for precise fuel tuning
• Compatible with HKS F-CON iS and F-CON V Pro systems
• 1.5-meter (approximately 59-inch) harness length for flexible installation
• Compact, weather-resistant design
• Not CARB approved — not legal for street use in California or other CARB-regulated states
• For professional use and installation only

The HKS 4299-RA003 Mixture Controller is an essential tuning accessory for enthusiasts and professional tuners looking to maximize the capability of their HKS F-CON fuel management setup.