Holley Releases EFI V5 Software Upgrade

Jun 22, 2018

Holley EFI has released its latest software upgrade, Holley EFI V5, which features Active Speed Management and allows racers to completely customize up to three sets of injectors.

At the drag strip, the all-new Staging Assist feature makes it easy to smoothly and consistently inch a boosted car into the staging beams run after run. V5 features an integrated traction-control system called Holley EFI Active Speed Management that’s engineered with drag racing and motorsports that start from a stop in mind, according to Holley.

V5’s ASM functionality is based on the time from launch versus engine speed and driveshaft speed (one or both can be used). Users can enter numerous different curves to retard ignition timing and even enable rev-limiting based on the departure of wheel speed or engine speed from the base curve.

The addition of ASM to a Holley EFI system requires the purchase of PN 555-100, according to the company.

The software’s new Customizable Injector Configuration gives users a large amount of options to sequence and tune the fuel contribution from each set of injectors when using two or three injector sets. Each set can be run sequentially, and each set can be individually chosen to perform individual cylinder, cranking, and startup prime fueling. It’s also compatible with almost any multi-injector set application and ideal for Roots supercharged and dual-fuel applications.