Speed By Design recently launched its new Twin Turbo Kit for the S550 Mustang and its equipped development vehicle will make its debut in Bowling Green next weekend.
For now, SBD is focusing only on 91 and 93 octane mapping but they tell us they will be upgrading the fuel system to a Fore Innovations Triple Pump basket very soon to push this kit on the factory motor on E85.
Its twin-turbo kit helped the 2015 Mustang GT lay down a whopping 721 RWHP and 639 RWTQ @ 12 psi on 93 octane, effectively doubling the factory horsepower output. This vehicle has plans of being a 9-second S550 in the quarter mile.
Check out the dyno chart and video in the forums.