A few months ago, I added short velocity stacks to my 5th gen & after much research it would appear that a larger airbox would be an advantage. So without the room to make one I decided to modify the existing one in a way that I think will improve the effect of the short stacks. The main issue I have with the standard one is the filter is in the middle & it obstructs the airflow to the velocity stacks. So with a leap of faith I removed the K&N & started work, below is the re