PAINLESS PERFORMANCE EFI

18 products

2005-2006 GM LS2 EFI Harness – Throttle By Wire

$654.99

Engine: 6.0L LS2 w/ 24X Crank Reluctor & 2X Cam ReluctorTrans.: 4L60E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and...

1999-2006 GM Gen III 4.8/5.3/6.0L Integrated EFI & Chassis Harness – Mech. TB

$1,299.99

Engine: 4.8L, 5.3L, 6.0L w/ Mechanical Throttle BodyTrans.: 4L60E Number of Circuits: 26 Fuse with 7 RelaysFuse Type: Mini Blade & Maxi FuseFirewall Passthrough: Multiple GrommetColor Co...

1999-2006 GM Gen III 4.8/5.3/6.0L EFI Harness – Mechanical TB

$599.99

Engine: 4.8L, 5.3L, 6.0L w/ Mechanical Throttle BodyTrans.: 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Lengt...

1998-2004 GM LS1/LS6 EFI Extra Length Harness

$659.99

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E, 4L65E, 4L80E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 8 Feet Between Engine and ECMFu...

1997-2004 GM LS1/LS6 Integrated EFI & Chassis Harness – Mechanical TB

$1,299.99

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E Number of Circuits: 26 Fuse with 7 RelaysFuse Type: Mini Blade & Maxi FuseFirewall Passthrough: Multiple GrommetColor Code Based: ...

1997-2004 GM LS1 EFI Harness – Throttle by Wire

$619.99

Engine: 5.7L LS1 / LS6 w/ Throttle by WireTrans.: 4L60E, T-56 Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFire...

1996-99 GM Vortec 4.3L V6 (CMFI) Harness Std. Length

$649.99

Engine: 4.3L Central Multi-Port Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewal...

1996-2000 GM Vortec 7.4L Big Block V8 Harness

$599.99

Engine: 7.4LTrans.: 4L80E Number of Circuits: 8 Fuses with 2 Ignition & 1 Fuel Pump RelayHarness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewall Passthrough: GrommetColor Code Ba...

$669.99

Engine: 4.3L (V8), 5.7L Sequential Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Length: 4 Feet Between Engine and ECMFuse Type: Blad...

$744.99

Engine: 4.3L (V8), 5.7L Sequential Fuel InjectionTrans.: 4L60E Number of Circuits: 8 Fuses with Ignition, Fuel Pump & Air Pump RelaysHarness Length: 8 Feet Between Engine and ECMFuse Type: Blad...

1990-92 GM V8 TPI Harness (MAP) Std. Length

$509.99

Engine: 5.0L, 5.7L Tuned Port Injection w/ Manifold Absolute Pressure Sensor (MAP)Trans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewa...

1990-92 GM V8 TPI Harness (MAP) Extra Length

$564.99

Engine: 5.0L, 5.7L Tuned Port Injection w/ Manifold Absolute Pressure Sensor (MAP)Trans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 8 Feet Between Engine and ECMFuse Type: BladeFirewa...

1986-93 GM 4.3L V6; 5.0,5.7 & 7.4L V8 TBI Harness Std. Length

$424.99

Engine: 4.3L, 5.0L, 5.7L, 7.4L Throttle Body Injected and Cross Fire InjectedTrans.: 200-4R, 700-R4 and Other Non-Electronic Harness Length: 4 Feet Between Engine and ECMFuse Type: BladeFirewall Pa...

$569.99

Engine: 5.7L LS1 / LS6 w/ Cable Throttle BodyTrans.: 4L60E, 4L65E, 4L80E, T-56 This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to...

2008+ Gen IV LS3 EFI Harness - Throttle By Wire

$762.99

Engine: LS3Trans.: 4L65E This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to run the designated engine & transmission only, ge...

2007-2012 GM Gen IV 4.8-6.2L EFI Harness - Throttle by Wire

$830.99

Engine: 4.8, 5.3, 6.0, 6.2LTrans.: 4L65E This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to run the designated engine & trans...