I know I already place a post one exhaust but I have one picked out was going to order today but decided to call my dealership since my car only has 28,000 and warrenty. I wanted to see from dealer before I made the purchase and he gave me the whole story i dont know you should wait until the warrenty expires incase you have any issues the warrenty might be voided if they relate it to ur catback like the Catalytic Converter saying that the rx 8 has a very sensitive one. Then he mention to buy a oem one like the one mazda speed has. I want the XS catback exhaust minus the racing pipe since that will def give me promblems with sensors and warrenty. So what im asking is what is the deal with you guys that have a catback any sensor promblems or warrenty issues plus anyone have the XS catback thanks guys really appreciate your help.

 

Well, if you get the midpipe, it removes your cat entirely.. But otherwise any catback should be fine I would think.