I beleive it can with a fly by wire throttle if it wanted. Even if you are giving it more air, the FBW throttle can close a bit, to give the "normal" airflow. This is what I would guess it does when you install a popcharger.
With the plenum, as it is balancing the air to the cylinders rather than letting in more, it gives better fuel/air mixes across all cylinders, which means better burn which gives more power
Usual disclaimer applies, I could be talking cack
Hummmm FBW throttle.... Another argument / discussion point. I am currently trialing a "Sprint Booster" for another forum. Results and Install to be posted soon. Its basicaly a block that plugs in to the loud pedal and then the FBW plugs into that. In a nutshell it tells the engine to do exactly what you want it to do and when. If you floor the pedal in a Zed the ECU still has control over what you are telling it too do. ie delays and control to the engine...
Again fitting this seems to have done something to the car as it feels and reacts differently, its a more balanced surge of power depending on how you put your foot down. From the manufacturers website...
"What is Sprint Booster?
Most cars in the 21st century have replaced the more conventional throttle cable for an ECM (Electronic Control Module) that translates how hard the pedal is pushed into electronic signals in order to provide power to the wheels.
The ETC (Electronic Throttle Control), which is also known as Drive-By-Wire, has the unfortunate downside of delayed response and subdued acceleration, which can create problems in certain situations such as up-hill starts, quick gearchanges and overtaking.
The Sprint Booster aims to overcome this throttle response delay for ETC equipped vehicles, by providing crisp, on-tap acceleration for whenever the driver demands it.
Results
At low revs, the engine responds at approximately half the time in comparison to before.
The delay time whilst accelerating in 3rd and 4th gear and the engine in the mid-range, is almost zero.
Big differences in the higher rev range.
Improved response for downshifts and safer overtaking.
Overall safety and more fun on the road!"
Trialing this over the past few months, I belive this to be correct as it does what it says... Before anyone says its an Ebay chip, its not. It dosnt claim to be in anyway shape or form.
If any of you are in the Surrey area wish to have a go, its a plug and play device so takes 30 secs to fit. I would welcome anyones opinions as you all know your cars from driving them and I just want to make sure that others think it works too...