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Holley EFI

Select up to (4) different tunes

: In stock

: Engine Control Module (ECM)

: Holley EFI

: 558-407

$176.95 $194.95

Designed to be used with the Holley Dominator EFI systems with multiple maps to select between up to four different types of...
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Designed to be used with the Holley Dominator EFI systems with multiple maps to select between up to four different types of tunes. These tunes can be used for many purposes, ranging from using certain fuel types, track conditions, and using nitrous setups. The switch is connected into the J3 ECU connector, with the calibrations being selected at in the vehicle key-on startup.

Your order of 100$ or more gets free standard delivery.

  • Standard delivered 4-5 Business Days
  • Express delivered 2-4 Business Days

Orders are processed and delivered Monday-Friday (excluding public holidays)


eMarket members enjoy free returns.

Select up to (4) different tunes

$176.95 $194.95