Originally Posted by TopgunZ

I think you are not going to notice it. You strap a Rotrex on and set it up the way it is suggested you are going to be ripping through rpms so fast it wont be a noticeable enough gain to justify plenum work. I mean when your sitting at 500whp in the midrange and pick up 5whp with plenum work are you going to notice a change in the car at 505whp?

Honestly I dont have the numbers for this but am guessing for the time and money it may not be worth it. But if your looking to squeeze every last drip of power from this thing in the mid range and money is not an input then I guess its worth it.