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Holley EFI 550-603N - HP EFI ECU And Harness Kit
PLEASE NOTE: Pictures are repsentative of style, and may be generic.

Holley EFI 550-603N - HP EFI ECU And Harness Kit

Holley EFI 550-603N

$3,206.95 $2,849.95
Special Price: save $357.00
5 OR MORE IN STOCK AND READY TO SHIP!
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Part Number:
550-603N
SKU:
HOLEFI-550-603N
UPC:
090127687468
Availability:
IN STOCK AND READY TO SHIP - See Disclaimer
DISCLAIMER - THIS ITEM IS A SPECIAL ORDERED PART:
This item is IN STOCK, but it has a Special Order Return Policy - the product is subject to the special order return and cancellation policy as seen in our terms and conditions. This may result in cancellation restrictions, or higher than normal restocking fees.

Holley EFI - 550-603N

HP EFI ECU And Harness Kit

GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous fed LS engine on water/meth? This HP EFI kit can control that too!

  • Simple Installation - Plug and Play control of GM LS2/LS3/LS7 engines. Just plug the harness into your factory sensors, wire the power and grounds and you are ready to take complete control of your LS engine
  • More Functionality - Provides significantly more functionality than OEM or other competitive ECUs (boost control, nitrous control, water/meth injection, plus a host of additional inputs and outputs to control fans, pumps, relays etc.)
  • Easy To Use - Laptop programmable ECU includes a variety of base maps that will have you hitting the cruise or track in no time
  • Ideal For Everything - including stock 5.3L engine swaps or all out, 3,000+ horsepower race cars that need a simple and powerful ECU and harness solution
  • Industry Leading Self Tuning Fuel Strategy - means less time tuning and more time enjoying the power of your LS vehicle
  • Kit includes ECU, harness, communication cable, software, USCAR (EV6 Style) injector connectors, and NTK wideband O2 sensor, designed to be used with GM LS2/LS3/LS7 engines with factory GM coils and a 58 tooth crank sensor
  • The NTK Oxygen Sensor is recommended when using leaded or methanol fuels, high exhaust and forced induction applications or for highest precision feedback
  • ECU is fully potted and can be mounted in the engine compartment or interior
  • Sealed automotive and marine grade connectors
  • 1-5 Bar MAP sensor capability
  • Optional plug and play hand-held programmer, 5.7" touch screen and digital gauges are available for ultimate control and vehicle monitoring
  • ECU is certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance
  • For a full list of advanced features such as boost, nitrous, water/meth, individual cylinder control and more click the document icon under the product image!

Accelerometer Support: Yes
Boost Control: Yes
Brand: Holley EFI
CAN-BUS Support: Yes
Category Filter: Fuel Injection - EFI
Clearance Category: Fuel Injection - EFI
Coil Per Cylinder Ignition Support: Yes
Crank Reluctor: 58x
Datalogging Support: Yes
Dry Nitrous Control: Yes
e85 Support: Yes
EGT Support: Yes
Emission Code: 3
Forced Induction Support: Yes
Fuel Filter Included: No
Fuel Hose Included: No
Fuel Injectors Included: No
Fuel Pressure Regulator Included: No
Fuel Pump Included: No
Grade Type: Performance
Ignition Timing Control: Yes
Ignition Type: GM LS 58x
Individual Cylinder Fuel Corrections: Yes
Injector Connector: USCAR (EV6)
Intake Manifold Included: No
Knock Retard Support: Yes
Multi-Stage Nitrous Control: Yes
Product Type: HP EFI Kit
Progressive Nitrous Control: Yes
Self-Tuning: Yes
Throttle Position Sensor Included: No
Traction Control Support: Yes
User-Tuneable: Yes
Warning: California Proposition 65
Wet Nitrous Control: Yes


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