BUY NOW, PAY LATER. Starting at 0% APR 
FAST Wiring Harness FAST Universal
$402.95
FST307040
Engine Components
Wiring Harnesses
This harness provides a universal connection to sensors etc for our Classic System
FAST Wiring Harness FAST Fuel Inje
$120.95
FST307013
Engine Components
Wiring Harnesses
Wiring Harness, Fast Fuel Inje Ctor
FAST Wiring Harness W/Relay FAST
$349.95
FST307012
Engine Components
Wiring Harnesses
Wiring Harness W/Relay, Fast M Ain
FAST Dist. Module
$103.95
FST305019M
Engine Components
New Products
Wiring Harnesses
FAST? Dual-Sync Distributors are an easy, drop-in, plug-and-play solution for fully sequential high performance V8 EFI engine applications. Featuring reluctors and pick-ups that have...
FAST Dist. ModuleReplace for Olds
$133.95
FST305014M
Engine Components
New Products
Wiring Harnesses
FAST? Dual-Sync Distributors are an easy, drop-in, plug-and-play solution for fully sequential high performance V8 EFI engine applications. Featuring reluctors and pick-ups that have...
FAST Harness EZ-EFI Gen2 Main
$430.95
FST30308
Engine Components
New Products
Wiring Harnesses
The FAST? EZ-EFI 2.0? Fuel + Ignition works with either generation of EZ-EFI? throttle body, multi-port systems and Inglese? throttle bodies and is compatible...
FAST Cig. Plug-In Adapter For EZ-E
$24.95
FST30271CPG
Best Sellers
Engine Components
New Products
Wiring Harnesses
This adapter provides easy power to the EZ EFI 1.0 Hand-HeldThis Part Fits: Year Make Model Submodel 1980-1985,1987-1991 Avanti II Base 1985 Avanti II...
FAST Wiring Harness Xim For LS1
$318.95
FST301972
Engine Components
Wiring Harnesses
The XIM? Ignition Controller allows you to easily control all aspects of the ignition system when used with a FAST? EZ-EFI 2.0?, XFI 2.0?...
FAST Fuel Injection System Wiring Harness
$43.95
FST30184
Best Sellers
Engine Components
New Products
Wiring Harnesses
This serial to USB conversion cable provides the link between your laptop and our 30104 five foot long communication cable. This cable features a...
FAST FAST LS2/LS7 Crank Pickup Adapter
$28.95
FST301416
Best Sellers
Engine Components
New Products
Wiring Harnesses
This harness provides the necessary extended wires and differently terminated crank sensor connector to adapt an LS2/LS7 crankshaft position sensor to an ignition harness...
FAST Harness FAST Fuel And Oil
$390.95
FST301407
Engine Components
New Products
Wiring Harnesses
Use two of our 307602 sensors to monitor fuel and oil pressure and know that your XFI can protect you in case of oil...
FAST Harness FAST Fan And Fuel Pump
$87.95
FST301406
Engine Components
Wiring Harnesses
This harness gives you the pre-built harness needed to allow the XFI to control your electric fuel pump and electric fan. Just provide the...
FAST Harness FAST Egt Kit
$1,263.95
FST301405
Engine Components
Wiring Harnesses
The XFI? EGT (Exhaust Gas Temperature) Module from FAST? allows XFI?/XFI 2.0? owners to monitor up to 8 EGT sensors without requiring the use...
FAST Harness FAST Vss And Aux
$43.95
FST301403
Engine Components
Wiring Harnesses
This harness allows you to connect a vehicle speed sensor or a driveshaft speed sensor to your XFI computer.
FAST Harness FAST Analog Input Kit
$52.95
FST301402
Best Sellers
Engine Components
New Products
Wiring Harnesses
This harness allows you to add up to 8 additional inputs to your XFI ECU. This harness is designed to aC-Commodate 0 to 5...
FAST Harness FAST Power Adder Kit
$42.95
FST301400
Best Sellers
Engine Components
New Products
Wiring Harnesses
Connect multiple Nitrous solenoids and take full control over your power adders with the XFI ECU using this kit.
FAST Ignition Adapter Harness FAST
$87.95
FST301308
Best Sellers
Engine Components
New Products
Wiring Harnesses
FAST's Thick Film Ignition Adapter kit contains the harness needed to adapt to a Ford TFI ignition device.
FAST Ign Adapter Harness Buick V6
$160.95
FST301307
Engine Components
Wiring Harnesses
Use this adapter to adapt XFI 2.0 to 86 to 87 Grand National & 86 to 87 T Type Buick and 89 Pontiac TTA...
FAST Ign Adapter Harness GM LT1
$106.95
FST301304
Engine Components
Wiring Harnesses
These adapters allow a common ECU and main harness to adapt to a wide variety of ignition strategies.This Part Fits: Year Make Model Submodel...
FAST Ignition Adapter Harness FAST
$49.95
FST301302
Best Sellers
Engine Components
New Products
Wiring Harnesses
This HEI Ignition Adapter kit contains the harness needed to adapt the XFI 2.0 to an HEI Ignition device.
FAST Ignition Adapter FAST Hall Effect
$54.95
FST301301
Best Sellers
Engine Components
New Products
Wiring Harnesses
FAST's Hall Effect Adapter kit contains the harness needed to adapt the XFI 2.0 to a 3-wire Hall Effect ignition device.
FAST Wiring Harness FAST IPU
$39.95
FST301300
Best Sellers
Engine Components
New Products
Wiring Harnesses
FAST's IPU Adapter kit contains the harness needed to adapt to an Inductive Pickup (IPU)/Magnetic ignition device such as a crank trigger or IPU...
FAST Wiring Harness F.I. 4&7 Swap
$181.95
FST301201
Engine Components
Wiring Harnesses
FAST XFI Fuel Injector Harnesses connect the XFI ECU to the fuel injectors. These harnesses are designed to aC-Commodate most common V8 engines from...
FAST Wiring Harness Std F/O SBC
$155.95
FST301200
Engine Components
New Products
Wiring Harnesses
FAST XFI Fuel Injector Harnesses connect the XFI ECU to the fuel injectors. These harnesses are designed to aC-Commodate most common V8 engines from...
FAST Wiring Harness Main LS1LS2L
$418.95
FST301108
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST Wiring Harness FAST Main Drag
$418.95
FST301106
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST Wiring Harness FAST XFI
$387.95
FST301105
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST Wiring Harness Main Dodge 5.7
$477.95
FST301104
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST Wiring Harness FAST Main LT1
$418.95
FST301101
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST Wiring Harness FAST Main
$442.95
FST301100
Engine Components
New Products
Wiring Harnesses
FAST offers several main harness options to aC-Commodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors...
FAST XFI Communication Cable - 5ft
$18.95
FST30104CPG
Best Sellers
Engine Components
New Products
Wiring Harnesses
This five foot long communication cable provides the link between our 30184 conversion cable to FAST E7 and XFI systems. This cable features a...
FAST Wiring Harness Wideband O2
$56.95
FST30103
Best Sellers
Engine Components
New Products
Wiring Harnesses
Required to connect the Wideband Oxygen Sensor to the XFI ECU's main wiring harness. It is approximately 4 feet long.
FAST Tach Adapter Assembly FAST
$132.95
FST170637CPG
Engine Components
Wiring Harnesses
This tachometer adapter/RPM module comes with EZ Fuel and EZ Fuel + Ignition systems in order to ensure that we receive a clean rpm...
FAST AdapterUSCAR To Minitimer
$106.95
FST170604-8
Engine Components
New Products
Wiring Harnesses
FAST? Fuel Injector Adapter Harnesses and Connector Kits enable easy retro-fitting of both new and old style electronic fuel injectors. New style fuel injectors...
FAST Adapter USCAR To Minitimer
$73.95
FST170604-6
Engine Components
Wiring Harnesses
FAST Fuel Injector Adapter Harnesses and Connector Kits enable easy retro-fitting of both new and old style electronic fuel injectors. New style fuel injectors...
FAST AdapterUSCAR To Minitimer
$52.95
FST170604-4
Engine Components
Wiring Harnesses
FAST? Fuel Injector Adapter Harnesses and Connector Kits enable easy retro-fitting of both new and old style electronic fuel injectors. New style fuel injectors...