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 -6AN SAE O-Ring to -6AN

FAST -6AN SAE O-Ring to -6AN

$22.81

FAST XIM Kit for GM LS2/LS3/LS7

FAST XIM Kit for GM LS2/LS3/LS7

$1,617.85

FAST XFI Fuel Inector Harness for GM LS w/ Minitimer Connector Injectors

FAST XFI Fuel Inector Harness for GM LS w/ Minitimer Connector Injectors

$300.98

FAST XFI Fuel Injector Y Adapter Harness for Multiple Injectors

FAST XFI Fuel Injector Y Adapter Harness for Multiple Injectors

$300.98

FAST PS50 Performance Canister Ignition Coil

FAST PS50 Performance Canister Ignition Coil

$109.59

FAST LSXR 102mm LS3 Intake Manifold Port to Cylinder Head Seal

FAST LSXR 102mm LS3 Intake Manifold Port to Cylinder Head Seal

$10.30