Many cars can run on pump gas with plenty of boost and make big HP. Some of the guys I've known would run like 12-18 psi on pump gas and 24-30 psi on race fuel. Many are FI and with a flip of a controller they can go from street mode to race mode. Was a big thing 20 years ago with the Grand National crowd.
Yes by adding fuel and removing timing. It is impressive, but how many of them make 1000, 1200 or more on 93? That would be a tuning feat I would imagine.
