I had the same problem last year. I haven't had the first service yet (doing so next week) when they are in Edmonton. I did have an exhaust system put in by a shop here. They did an excellent job and I am certain they could do your service for you.
It's a little shop called "Sports Car Centre Ltd". Owner is Bert. Address is 8737 - 53 Avenue. Phone 780 440 9426.
I highly recommend them if you decide to make the trip to Edmonton.