In this age of turbo everything, it's easy to forget that not all naturally aspirated engines are equal when it comes to throttle response. Some are more indeed equal than others. When it comes to fuel injected rather than carburettor-fuelled engines, then, the ultimate in throttle response is enabled by individual throttle bodies for each cylinder. That allows the bodies to be much closer to the combustion chamber and reduces the lag or time delay between adjusting the throttle and the impact of that on combustion. Porsche used just such a system back in the day on the 911 Carrera RSR and the 911 SC RS. However, Porsche no longer supplies factory parts. Enter Mittelmotor in Germany. They're now reproducing the throttle bodies in full and the setup is compatible with the original solution, allowing individual parts to be replaced. To find out more and for pricing, head for www.mittelmotor.de.