Reviewed By Mark F (FORT MYERS, FL) Reviewed for a 2009 Mazda RX-8 —12/11/2015 5:15 AM
Had a local track shop mechanic weld it in place. Worked for converting back our 2009 RX8 from track (CAT delete test pipe) to street. O2 sensor now happy again, engine light off, and still sounds great. Quieter than straight pipe but sounds way better than stock. Couldn't noticeably feel any power difference either. Wish I would have done this first. Great product!