I had a test pipe made and it rattles like a bitch, i couldnt use the stock spring bolts because of the flange differnce, so i attempted to make my own with longer bolts, thousand washers and the stock springs but it still rattles any ideas???? I dont even know if its the bolts or not i got a good seal i used the donut of s2000 i dont have a clue

 

Ge the propper donut. And make sure its tight....you will get more than rattles....you will get Carbon Monoxide poisoning at the next red light....