Great work Tony...
Again to my previous question because I'd be interested in further custom tunability and parts....
I'd assume it would be just as easy to run a single pipe DP so that I could attach a custom straight through exhaust.
Single pipe is usually less weight and more open flowing without getting a open/close valve at the DP. The pipe your running on that current DP looks to be a 4", but I could be wrong.
I'd imagine you'd see some nice gains even at maintaining a 3" straight through pipe instead of tapering to meet the stock exhaust.
Just asking out of my own curiousty.