When you drop the air pressure in your tires that means there is less pressure pressing the rubber to the pavement.
An underinflated tire will only press the outside edges to the pavement and lose the center contact patch. Therefore you will have less traction to get you moving.
Plus once moving the underinflated tires will drastically increase rolling resistance which will slow you down the rest of the track. Top end especially...
We are taking street tires here. Low profile at that!
Not drag slicks. They are designed differently and normally have much more sidewall.
So lowering your pressure will not garner better times.
Also lower pressure tires will not help with wheel hop unless you mean there is a far smaller threshold of traction (since they have so much less) and go right to wheel spin vs staying in the "wheel hop zone" longer.
