I have a 2004 honda civic ex coupe 1.7L. i recently installed a Stainless Steel Cat-Back Exhaust System with Single Rear Exit by Torxe. It has a main tubing diameter of 2.25. I have noticed that my car rattles when i drive. I would like to know is it because my tubing is too big and if so what can i do to fix it or do i have to buy a whole new exhaust system?