Isn a quad throttle system better than large single throttles on the Jaguar V12?
No, because the quad throttle layout goes against some of the accepted principles of good manifold design with regard to flow bias so is actually worse for air distribution than the standard arrangement. Quad throttles don’t perform as well as properly sorted single (i.e.one to each manifold) throttle systems and they add unnecessary complication which is one reason why the layout was never used on either the TWR Group A XJ-Ss or the XJR15 racers.
