SFI4 – Supplemental Fuel Injection via CAN

SFI4 – Supplemental Fuel Injection via CAN

Our KYLETUNEDIT SFI4 – Supplemental Fuel Injection via CAN provides the additional fuel your Audi 4.0 TFSI needs when power increases beyond the limits of the factory system.

By precisely managing extra injectors through advanced CAN-based communication, it maintains a safe air-fuel mixture under high boost, E85 use, or larger turbo setups, preventing lean conditions and protecting your engine while unlocking its full performance potential.

DS1 Compatible: Fully integrates with DS1 (Dyno Spectrum) for advanced tuning and seamless communication with your ECU.

What Makes Our SFI4 – Supplemental Fuel Injection via CAN Different?

• KYLETUNEDIT was the first company to achieve full CANBUS communication between DS1 and an external supplemental controller and we remain the only manufacturer offering this level of safety and accuracy in the 4.0 TFSI market.
• Unlike systems that rely on fixed duty cycles, our SFI4 adjusts injection volume dynamically based on multiple live engine inputs, reacting instantly to every change.
• Furthermore, if fuel pressure drops or tuning parameters change, the controller automatically compensates and stabilizes delivery. This maintains perfect air-fuel ratios under every condition.
• In addition, our SFI4 communicates bidirectionally with the ECU, constantly exchanging data between the controller and the main computer. This ensures redundancy, safety, and precise real-time corrections, which are vital for supplemental fuel injection via CAN.
• Immediate protection, If communication is lost or a sensor reading goes out of range, the SFI4 detects the issue, alerts the ECU, and activates safety measures to prevent engine damage.

Additionally, Our SFI4 controller supports up to six external sensors. This enables advanced data acquisition and additional safety monitoring:

• 2× Digital Inputs for sensors.
• 4× Analog Inputs (0–5 V).

Here are just a few examples of the types of sensors you can add in our SFI4 Control

The sensors transmit all data through CANBUS directly to the ECU. Therefore, it is fully available for tuning, safety triggers or data logging. This is especially useful for implementing supplemental fuel injection via CAN.

Tuning Advantages

Importantly, our controller simplifies the tuning process. Every injector, fuel pressure, flow characteristic, and other parameters are preconfigured and mapped. Consequently, this allows for faster and more accurate calibration. Tuners spend less time troubleshooting. Therefore, they spend more time delivering safe, consistent power using SFI4 – Supplemental Fuel Injection via CAN.

Why Choose the SFI4 – Supplemental Fuel Injection via CAN by KYLETUNEDIT

In conclusion, our KYLETUNEDIT SFI4 Control System is more than a supplemental injector controller. It’s an automatic fuel calculation, safety monitored, and fully integrated fueling brain for the 4.0 TFSI platform. Moreover, it is designed for tuners, racers, and enthusiasts. As a result, they demand precision, reliability, and innovation in the realm of supplemental fuel injection via CAN.

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