HKS F-CON iS Piggy-Back ECU - 4603-RA001
Unlock the full potential of your vehicle's engine with the HKS F-CON iS, specifically designed for advanced engine control. This innovative piggy-back ECU seamlessly connects to your stock ECU using a vehicle-specific harness, eliminating the need for any modifications. Ideal for car enthusiasts looking to enhance fuel and ignition management, the F-CON iS builds upon the proven features of the F-CON SZ while introducing new capabilities.
Key Features
- Advanced control for fuel and ignition management
- Incorporates OBD II diagnostic data collection
- Supports adjustments for upgraded intake/exhaust systems and boost levels
- Air Intake Temperature Sensor included
- Weather-resistant connectors for durability
- Length: 2.5 meters for flexible installation
- Compatible with HKS F-CON V Pro Versions 3 & 4
Fitment
- Universal compatibility for various vehicles
Customer Insights
Users have found the F-CON iS to be a game changer, especially after making upgrades to their intake and exhaust systems. The ability to fine-tune settings based on real-time OBD II data has been praised for optimizing performance and ensuring smooth operation. Whether you're a weekend racer or a daily driver, this ECU provides the flexibility and control needed to get the most out of your engine.
Important Notes
- Images are for marketing purposes only; actual product may vary.
Other Part Numbers:
HKS #hks4603-RA001
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Since its beginning, HKS has been committed to providing well-integrated, reliable,and environmentally sound performance systems. Mr. Hasegawa's strong leadership, engineering genius, creativity and willingness to listen to customers are the pillars of the company's success. Monitoring consumer reaction and input on issues pertaining to material quality, external appearance, sound quality, and of course, performance, HKS stays in tune with automotive enthusiasts' needs. Moreover, HKS' products are designed to be user friendly for easy installation.
HKS provides a warranty to the original purchaser of HKS exhaust systems against defects in materials and workmanship for a period of one year. The warranty applies only for vehicle specific exhaust systems. Other products such as metal catalyzers, front pipes, exhaust manifolds, and center pipes are not covered.
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