What is Aston Martin up to?

[AU N EGL]

Originally Posted by Truckosaurus

Would the larger restrictors not mean the extra power is released without having to rev higher?

Yes and NO. The engine is designed then tuned for the restrictor size.

Smaller restrictors ( Larger hole) will allow more air to pass though in to the Throttle bodies. Large Restrictors ( Smaller hole) will limit the air flow, however the speed of the air flow velocity into the throttle bodies is greatly increased.

So the options are:
move volume of air at slow velocity = pushing the HP UP THE RMP range
or
less air at high velocity = pushing the torque levels up in the lower rpm range.

Little over simplifed but that is the idea.