well ive tryed over the weekend the benefits of pod in engine bay vs pod under guard.
Results as below:
In engine bay:
* Poor response
* Lacking in power
* Sucks in heat and dust
Underguard:
* Very Excellent response
* Feels like more power
* Some signs of elements(water, dirt) being sucked in but very minimal.
So under the guard is the best form of cold air especially if you feed the cold air to it.
hope it helps