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Holley is quickly becoming The New Standard In EFI! Holley’s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley’s EFI throttle body powers every NASCAR Sprint Cup Series™ team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star race. But that’s not all. The world’s best street machine builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It’s the easiest, most refined, feature-rich system that money can buy. But, don’t take our word for it, see what the best are saying about Holley EFI!

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  • HEMI Coolant Temperature Sensor Connector - 570-233 - Modern Day Muffler
    HEMI Coolant Temperature Sensor Connector - 570-233
    $7.74
    $7.74
    Sold out
  • MOLEX MX150 MALE PINS 20-16GA 100PK - 571-112 - Modern Day Muffler
    MOLEX MX150 MALE PINS 20-16GA 100PK - 571-112
    $14.08
    $14.08
    Sold out
  • 4 Pin CAN Connector - Harness Side - 570-229 - Modern Day Muffler
    4 Pin CAN Connector - Harness Side - 570-229
    $8.65
    $8.65
    Sold out
  • Holley EFI Carb Hat - 120-232 - Modern Day Muffler
    Holley Engine Air Intake Adapter 120-232; Black Cast Aluminum Plenum Adapter
    $168.95
    $168.95
    Sold out
  • EFI Throttle Body Intake Elbow - 300-240 - Modern Day Muffler
    EFI Throttle Body Intake Elbow - 300-240
    $139.95
    $139.95
    Sold out
  • 1/4
    1/4" Stainless EGT Weld Bung - 8 Pack - 543-163
    $97.87
    $97.87
    Sold out
  • Commander 950 Distributor Wiring Harness Adapter - 534-139 - Modern Day Muffler
    Commander 950 Distributor Wiring Harness Adapter - 534-139
    $105.95
    $105.95
    Sold out
  • Fuel Rail Kit - 534-192 - Modern Day Muffler
    Fuel Rail Kit - 534-192
    $289.95
    $289.95
    Sold out
  • HI-RAM 95MM Fabricated Side Mount Plenum Top - 300-285 - Modern Day Muffler
    HI-RAM 95MM Fabricated Side Mount Plenum Top - 300-285
    $295.95
    $295.95
    Sold out
  • Holley EFI LS Spark Plug Wire Set - Cut to Fit - 561-111 - Modern Day Muffler
    Holley EFI LS Spark Plug Wire Set - Cut to Fit - 561-111
    $120.95
    $120.95
    Sold out
  • EFI Throttle Body Intake Elbow-Black Finish - 300-240FBK - Modern Day Muffler
    EFI Throttle Body Intake Elbow-Black Finish - 300-240FBK
    $178.95
    $178.95
    Sold out
  • Chrysler 46RE Transmission Control Harness - 558-473 - Modern Day Muffler
    Chrysler 46RE Transmission Control Harness - 558-473
    $183.95
    $183.95
    Sold out
  • 83 lb/hr Performance Fuel Injector - Individual - 522-831 - Modern Day Muffler
    83 lb/hr Performance Fuel Injector - Individual - 522-831
    $68.73
    $68.73
    Sold out
  • Holley EFI Ladies\' Leggings - 10229-LGHOL - Modern Day Muffler
    Holley EFI Ladies\' Leggings - 10229-LGHOL
    $25.00
    $25.00
    Sold out
  • CAN EXTENSION HARNESS, 8FT - 558-425 - Modern Day Muffler
    CAN EXTENSION HARNESS, 8FT - 558-425
    $41.90
    $41.90
    Sold out
  • GEN III HEMI VVT Harness Only - 558-131 - Modern Day Muffler
    GEN III HEMI VVT Harness Only - 558-131
    $81.55
    $81.55
    Sold out