Originally Posted by PrimeBMW
I would confirm by calling Dinan for yourself but they told me that the racing/middle exhaust tune has their standard warranty.
I believe Dinan still has the best warranties (matches the BMW warranty) in the industry but I would not be surprised if the Dinan - BMW relationship is not as cozy as it was in the past..........now that BMW is providing their own performance after the sale products.
The warranty is stated in their website.
When I bought my Dinan mid-pipe, dealer warn me about the warranty.