Greddy Cold Air Intake - Sound Tube Delete after drilling
 

So I had my Greddy CAI installed last month and I kept the sound tube and had to do the drilling as per the instructions.

I've changed my mind and want the sound tube deleted. What I want to know is if anyone has tried to plug up the hole and delete the sound tube after having it drilled already. DIYs appreciated.

Im going to order the Greddy Evo 3 exhaust (impressions appreciated) and I'm afraid the combination will be too loud with the sound tube kept in.