Holley Power Valve Experimentation

Cool the mechanical complexity of a Holley, but still nothing compared with the Bosch Jetronic mechanical fuel injection on 1990's Euro cars (incl. Delorean). Those are like a fine Swiss watch with jewel movements and even a mechanical fuel distributor. If you want simple, go Carter -> Edelbrock, though fooling with metering rods can be tricky.

I put a Holley Commander 950 TBI on my 1965 383, but couldn't get it to idle reliably. At least you can make all adjustments on a PC. Problem is old software and finicky (Win XP max) and Holley no longer supports it. Many problems were software glitches, like it would start not firing, I'd login to the controller and find the whole fuel map botched with strange numbers. Finally found aftermarket auto-tune software for $15, which helps a lot. Need to switch to a wideband O2 sensor to make tuning easier and more precise. That is a wise thing for tuning a carburetor too, so you aren't flying blind.