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.
That is a HUGE bonus. My first EFI system was a rather obscure unit that works opposite of most. I struggled with it due to nobody knowing how to tune it and the learning curve was steep.
