Originally Posted by CdnoilRAM
I would personally take a filterbox with a properly designed accelerator tube over something like the vararam. The Vararam does nothing for increasing your intake velocities, which is a very important thing with our intake design. The vararam is just fine if we only had a single plane manifold like the old carb engines that just needed a large reservoir, but our design requires air to be moving as fast as possible through the throttle body to reach all the chambers in an efficient manner.
This guy ^^^ has the answers
But as other stated above, you will feel the vararam more with a few more mods bundled with it.
I personally sell both the K&N and Vararam among others and I personally switched from the K&N (got annoyed with the resonance in the cab on acceleration) and went with the Vararam.
There is a slight benefit on WOT, but every day street driving its like anything else.
It does have the cool factor and yes it does seem flimsy.
But when you hood is closed, it is rock solid and tight
How do I know? I remove my grille and shut my hood and reach in through the little cracks and tried shaking it.
It was snug.