Butler-LS - EFI Systems/ECU's

EFI - EFI Systems/ECU's

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Looking for an LS part and don't see it on the site? Need a rotating assembly, short block kit, or machine work? Our LS team here at Butler is shipping high performance GM/LS engines, kits, and parts all over the world.


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Air and Fuel is vital to a thriving engine. No horsepower can be made with either air or fuel missing from the equation. Butler is your GM LS specialists when optimizing and tuning GM LS performance engines. Butler partners with many top companies in the street and race industry such as Edelbrock, Holley, Aeromotive, Mallory, Demon, FAST, and more to bring you top quality performance parts at the best prices possible. You don't just buy a part from Butler, you get our knowledge and expertise to back it up.

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Items 1-11 of 11
Description: Price too low to advertise ECU & Wiring Harness for 24x Cranks NTK Wideband Oxygen Sensor Plug and paly with LS1/LS6 boost control, nitrous control, and water/meth injection Capable 1-5 Bar MAP sensor capability
Item #: HLY-550-602N
Condition: New
Price: $1,975.95
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Description: ECU & Wiring Harness for 58x Cranks injector harness for Jetronic / Minitimer (Bosch type) Injectors NTK Wideband Oxygen Sensor Plug and paly with LS2/LS3/LS7 boost control, nitrous control,...More Details »
Item #: HLY-550-607N
Condition: New
Price: $1,975.95
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Description: Comes with the Wiring Harness Injector Harness and adapters O2 Sensor Electronic Fuel Pressure Kit Utilizes FAST C-COM software Supports N/A & boosted applications up to 5 bar Works With EZ-TCU, EZ-LS, XIM and FAST eDash
Item #: FST-303000
Condition: New
Price: $1,449.95
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Description: EZ-LS Ignition Controller w/ wiring Harness and adapters Works with EZ 2.0, Sportsman, or the XFI injection systems
Item #: FAS-301312E
Condition: New
Price: $379.95
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Description: Self-Tuning for GM/LS Multi-port Engine Swap w/ EZ-LS Ignition Controller EZ-EFI 2.0 ECU Touchscreen Hand-held w/ Mount Wiring Harness Oxygen Sensor
Item #: FAS-30405-KIT
Condition: New
Price: $1,450.95
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Description: Engine Control Unit Includes (NTK02) O2 Sensor w/sensor wiring harness ** Does not Have Main Wiring Harness **
Item #: FAS-301000
Condition: New
Price: $1,520.95
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Description: XIM Standalone Coil-On Plug Ignition Controller Wiring Harness Truly plug and play Easy tuning Sold in Kit
Item #: FAS-301311
Condition: New
Price: $654.95
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Description: ECU Assembled Throttle Body with Sensors/Injectors Wiring Wideband O2 Elecronic Fuel Pressure Kit
Item #: FST-303001
Condition: New
Price: $2,495.95
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Description: Self-Tuning Fuel Injection System w/ Cast aluminum 4-barrel Throttle Body Wiring Harness ECU All Necessary Sensors **NO Fuel System**
Item #: FAS-30400-Kit
Condition: New
Price: $2,149.95
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Description: Self-Tuning Fuel Injection System Master In-Tank Pump Kit Cast aluminum 4-Barrel Throttle Body Wiring Harness ECU All Necessary Sensors w/ Complete Fuel System
Item #: FAS-30401-Kit
Condition: New
Price: $2,689.95
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Description: Self-Tuning Fuel Injection System Master In-Line Pump Kit Cast aluminum 4-Barrel Throttle Body Wiring Harness ECU All Necessary Sensors w/ Complete Fuel System
Item #: FAS-30402-Kit
Condition: New
Price: $2,529.95
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Items 1-11 of 11

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