This technique, primarily employed in manual transmission vehicles, involves maintaining full throttle during gear changes. The driver does not lift off the accelerator pedal when depressing the clutch to shift gears. For example, during acceleration, instead of releasing the gas pedal, the driver keeps it floored while quickly engaging the clutch and shifting to the next gear.
The principal benefit of this method is a reduction in the time spent between gears, thus improving acceleration. By keeping the throttle open, engine speed does not drop as significantly, and the engine is closer to its optimal power band when the next gear is engaged. Historically, this method was more common in racing environments where minimizing lap times was paramount, but it has since seen broader adoption by enthusiasts seeking enhanced performance.