My truck has a slight vibration in the floor board and gas pedal. Could this be exhaust drone from my Silver Bullett cat-back? It seems to do it most at cruising speeds in and out of overdrive. I don't notice this when taking off and its only noticeable at lower rpm's. Thank you!

 

It might be but I have no problems as I have the Borla catback and I think it's the best cruising catback you can buy, but most everyone likes the louder catbacks.

 

Magnaflow with hollow cats. Now I have 4 resonators and a "muffler". Doesn't drone at all

 

Some people cant notice the vibration un my truck but I have rubber floor mats and can feel it through them in my feet, and on the gas pedal.