Precision-Compatible with Holley EFI Systems This 558-443 CAN to USB dongle is purpose-built to fit for Holley EFI systems, including Sniper EFI, Terminator X, HP EFI, and for Dominator ECU platforms. Whether you're running a street build or a full race setup, this cable ensures error-free communication between your vehicle's ECU and your tuning software. No additional adapters or conversion tools needed — just plug and go. Real-Time Data Logging & Diagnostic Power .
