The whole downpipe issue is really a non issue. I have the FB sportcat and love it. If I need warranty work done I can replace it in about 30 minutes with the stock unit I kept. I wrench soley on my cars and this is a super easy task as I did the install in hour or less. Tuning using a flashtune modify the DME is a horse of a different color. That is why I chose to not tune yet
