I don't have personal experience with the Hindle full systems but they have a Busa dyno chart here: Hindle Dyno Chart
In view of the limited gains shown on the chart, I suspect they just bolted it on a stocker without benefit of remapping although I am not sure.
The BDE-Hindle was developed by Brock Davidson, on the dyno and track, with some kind of working relationship with Hindle. Hindle manufactures the BDE-Hindle assembly. It is a maximum performance pipe. The whole system weighs about 8 pounds via thin-wall stainless primary tubes and a Titanium can. It is amazingly light in your hands and fits very snugly without fairing problems when properly installed. The header tubes are "stepped", increasing in diameter a few inches out of the exhaust ports. I have not been to the dyno yet but will soon with PAIR block-off's, BDE-Hindle full system, air-box mod and a BDE map in the Power Commander. I think 15 HP at the rear wheel is realistic with these easy mods. Brock's pipes work and maps are available that have been precisely dialed-in for various combinations of common mods. When you purchase a BDE pipe, you get access to areas of his web site where many tuning tips and performance realities are revealed. This is a very impressive aspect of his services to BDE customers. I've got them in stock, discounted.
I could have chosen to handle any brand of pipes out there and I chose BDE (exclusively), if that tells you anything...!