Welcome to BigStuff3
By the "90s, hoards of enthusiasts were jumping on the EFI bandwagon and singing the praises of driveability, gas mileage, and (sometimes) horsepower improvements. But in the realm of serious power, limitations in factory electronics capped ultimate potential. EFI didn't like big cams, refused to rev beyond the factory air/fuel maps, and didn't get along with injectors big enough to make real horsepower.
Then in the mid'80s, computer-whiz John Meaney created a standalone engine management system that controlled fuel and spark independently from the factory computer. Dubbed Digital Fuel Injection (DFI), Meaney's device provided almost limitless tuning potential based on a few simple parameters. The DOS based software was easy to navigate and enabled affordable real-time fuel & spark changes via a laptop PC. Engine combos once deemed to radical for the street could be tamed to chug comfortably on the freeway and idle smoothly without sacrificing any power.
A true testament to DFI's potential is its impact on import drag racing, where big block-level air and fuel flow was crammed into four tiny cylinders and effectively managed with just four injectors. Meaney began marketing DFI through ACCEL in 1991, later developed a new standalone system for F.A.S.T., and is now offering his latest and greatest BigStuff3 system on his own. Corporate buyouts aside, DFI helped EFI reach its true performance potential and precipitated a new market of powerful standalone controllers for racers and hot rodders to choose from.