Relays are a required item whenever you want to use your XFI ECU to control a high-current device, such as a fuel pump or nitrous solenoid with one of its low-current outputs. FAST offers relays to cover many applications. When choosing a relay, it's very important that the relay current rating (shown in amps) be appropriate to the current requirements of the device you intend to control with it. So, if you're in need of a relay--think FAST relays.

More From This Category

FAST Driveshaft Speed Sensor Kit for 1.875 in. Yoke

FAST Driveshaft Speed Sensor Kit for 1.875 in. Yoke

$467.03

FAST XR-I Points Replacement with PS20 Coil For Chevrolet from 1957 to 1974

FAST XR-I Points Replacement with PS20 Coil For Chevrolet from 1957 to 1974

$235.86

FAST XFI 2.0 ECU Kit w/ Internal Data Logging

FAST XFI 2.0 ECU Kit w/ Internal Data Logging

$4,370.81

FAST Ignition Coil, E92, E-Core, Square, Epoxy, Black, Each

FAST Ignition Coil, E92, E-Core, Square, Epoxy, Black, Each

$211.75

FAST MAP Sensor, 2 Bar Range, GM, TPS Sensor, Air Temp. Sensor, Coolant Temp. Sensor, Kit

FAST MAP Sensor, 2 Bar Range, GM, TPS Sensor, Air Temp. Sensor, Coolant Temp. Sensor, Kit

$341.76

FAST XFI Oxygen Sensor Harness

FAST XFI Oxygen Sensor Harness

$106.78