Why dont we like them ??
This is what K-tec say about them;
This is a fully modified carburettor body which benefits from a larger venturi and is fully re-jetted to suit the greater airflow through it. The machined venturi bore is 30% larger than the standard item which results in more boost pressure making it into the engine. This means power is increased without increasing the boost pressure. This is achieved because the standard carb can cause a pressure loss of up 5psi through it due to the bore size of the standard venturi (i.e. 15psi boost pressure entering the carb can result in 10psi boost pressure exiting the carb and entering the engine = 5psi pressure loss) whereas the free flowing Group `A` carb will only 1-2psi across it resulting in more boost entering the engine. MORE BOOST = MORE POWER. Obviously the carb is fully re-jetted to cope with the extra airflow and has been used successfully on cars running over 35psi with no change to the supplied jetting. It can be fitted to standard cars but is a must for cars running over 20psi as the standard carb becomes far too restrictive.
Any truth in that or a load of bull ?.
Whats the pros(if any) and cons ?