Trans Controller Sniper EFI Standalone

The Trans Controller Sniper EFI Standalone by Holley represents a purpose-built transmission control solution for builders who demand precision fuel management and gear selection in high-performance applications. Designed for enthusiasts running standalone EFI systems without factory PCM integration, this controller bridges the gap between modern fuel delivery and independent transmission tuning. Whether you're building a carbureted-to-EFI conversion, a custom engine swap, or a dedicated race platform, this unit eliminates dependency on OEM electronics while maintaining full authority over transmission behavior.

The Sniper EFI Standalone operates as a fully independent controller, accepting input from your engine management system to synchronize shift points, converter lockup, and line pressure with fuel injection events and boost levels. Its compact form factor—measuring 7.9 x 3.3 x 9.6 inches and weighing just 1.9 lbs—fits easily into tight engine bays or under-dash mounting locations without sacrificing functionality. The controller processes real-time sensor data (vehicle speed, throttle position, boost pressure, and engine load) to execute smooth, consistent shifts while protecting your transmission through intelligent pressure modulation and adaptive learning algorithms that account for fuel octane, air temperature, and altitude variations.

This controller suits street machines, bracket racers, and custom fabricators who've invested in aftermarket EFI systems and require transmission control without reverse-engineering factory wiring harnesses. Installation demands basic automotive knowledge: power, ground, CAN-bus communication to your ECU, and transmission solenoid output harness connections. Compatibility spans a wide range of modern transmissions capable of electronic shift control, though specific transmission selection and tuning parameters should be confirmed during the build planning phase to ensure optimal calibration for your particular platform.