Holley HP is a pretty much customisable, fully featured EFI controller. It can be used TBI, batch or sequential and in batch and TBI with or without ignition control.
If you are interested, I suggest you waltz over to Holley and do some reading.
"Self learning."
The HP ECU is used on several of their systems. The simplest does not require a laptop or the more expensive touchscreen display, just a tiny handheld control.
