Going to be cutting off the secondary cats and putting Vibrant SS 1790 Resonators in their place, during the next couple of weeks.
I currently have 335IS mufflers with the golf tee mod. & SS X pipe in place of the center resonator.
http://www.redtailperformance.com/Ex...ance_RTP-X002/
I am looking to get rid of some rasp, deepen the tone of the exhaust & perhaps reduce some Hwy. drone. From all accounts I think the 1790 resonators should do this. The nice thing about this deal is that it will reduce some back pressure from the turbos on my n54.