Holley HP has less inputs/outputs.... the Holley Dominator has more inputs/outputs and can control automatic transmissions.
Here is a good testament to how great it works. 101mm Turbo LS V8 running 500lb Moran injectors. He gave up on the factory computer after wasting many many hours.
Wired up the Holley.... loaded in a base file.... badda bing... badda bang. It runs. Dyno Tuning in 1 week.
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