Yeah, most of us know what accel pumps do & why, & VV carbs tend to scare most folks(even tho' AVS's & even more so TQ's are).
In the NAPCAR case, I believe the physics involved was something along the lines of; ...super-speedways are restrictor plated, that means the intake is functioning at a relatively high depression all the time, keeping normal fuel droplets atomized wasn't/isn't an issue, the 'hyper' atomization actually took up more space & reduced the atmosphere volume in the runners....less air & needless over-atomization cost them power. At least, that's the gist of what I recall about that one particular example.
