Having run hundreds of tests on the. effect of 2-valve throttle body upgrades on everything from stock to supercharged combinations. (both centrifugal and positive displacement), it is safe to say that throttle body upgrades on the 2-. valve motors are a worthwhile endeavor.
VDC may refer to: In technology: Virtual design and construction, modeling software and techniques to design and evaluate possible construction processes; Volts of direct current; Video display controller, a computer graphics chip; Vehicle Dynamics Control, a means of increasing vehicle stability through a combination of throttle restriction and braking
VDI may refer to: VDI (file format), the virtual disk image file used in VirtualBox systems; Verein Deutscher Ingenieure, the Association of German Engineers; Vidalia Regional Airport (IATA code: VDI) Virtual desktop infrastructure, desktop virtualization; Virtual Device Interface, a component of Digital Research's Graphics Environment Manager (GEM)