not much improvement in performance, even with a full system with extractors won't make it go like a rocket,but it helps. I went that route when I had my XE Ghia 4.1. did help a little down low.BoOtHeMaN said:it's realy a XE ford fairmont ghia 4.1L
i need new exaust cos i need 2 get it raod worthy, how much would a staright threw cost?
and what improvement would it have?
other then a muffler