hey guys i had a muffler shop custom make my 2.5 ich exhaust now what i did was i put an apexi n1 3 inch muffler on. so the whole system consists of a stock b18b1 manifiold with a 2.5 high flow cat and a 3 inch muffler. now i know that with every preformance part u put on your going to get a little vibration. the problem iam having is that there is alot of vibration or the whole system. now i what want that to stop. and i was wondering if i bought a new 2.5 cat back system form apexi would it have no vibration