To download the latest software:
1. Type in http://www.holley.com/TechService/Library.asp (or go to the top of this screen adn click “Technical”, then “Resource Documents and Downloads”) and scroll down to “Fuel Injection”. Click on “Pro–Jection 4Di Tuning Software”. It will ask you to “Open” or “Save”. Click “Open” and you will see a folder named “4Di Software”. Click on this and look for a pdf file named “Instructions to Download”. (If you do not have Adobe Reader, you can download it free at www.adobe.com) Follow these instructions to complete the download.
2. The software is now installed.
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.