Tyre pressures in the Pro Mods are around 16 psi.
In these things pressures are 8 psi.
These are TF/FC (Top Fuel Funny Car) and together with the long rail versions are as serious as motor racing gets.
1st clip is Team Diehard with fire up prior to run. They do this to check fuel pressures, alter timing, clutch & reverse.
A team testing. Good drivers view afterwards.
http://www.streetfire.net/video/dami...80_1387385.htm