Hi the best thing u could do is throw that exhaust system away it is S#%T I had one on my old 06 bf gt and had nothing but issues with it from running quiet to rusting in 4 months and as for the price I paid $3990 nz dollars for that sh*tty cat back system but in the end I seen the light and bought a difilppo full Stainless steel system and by god that thing sounded angry.