Holley also has a EFI forum that is broken down by specific model lines like Sniper, HP or Dominator. There are also numerous Holley EFI Facebook pages that get tons of traffic with technical advice and questions.

Most of the race tracks I go to I see the majority of the cars running EFI conversions are all Holley. So you are more likely to run into other people that are familiar with Holley than the others in my experience.