My truck is making a noise when I give it 1/2 to full throttle Is it from the Borla cat back, it sounds like the exhaust is bouncing off of a peice of paper. Is it just that exhaust or the side exit thing or what?

 

ttt

 

hope it isnt the noise im getting tonight...sounds similar and coming from under the hood. My description of the sound is like someone is ripping up aluminum foil very rapidly under my hood...or maybe like a bunch of bee bee's bouncing around under the hood. I have mad detonation problems after filling up at a local station. Fu*k White Oak Texaco and their ****ty gas.