Hello so i recently got my quad tip installed and my xpipe but ive noticed after i got home that my exhaust tips vibrate/shake at idle when the car is on P. anyone have any ideas whats causing them to do this or is it normal ?

 

It's the tip vibrating against the heat shield. Get a friend to identify where it is hitting the heat shield and bend the exhaust or get the shop to bend it for you.

At least that's what happened with me.