Last weekend I finally decide to install the parts on my shelf for two years and get my 2005 Mustang GT tuned. Has 64,800 miles on it. Very happy with the numbers and above what I and the tuner expected.
Performance mod list: Western Motorsports High Velocity Intake, port and polished stock throttle body, Steeda charge motion delete plates and under drive pulleys, MAC long tube (mid-length) headers, off-road MAC ProChamber, Bassani Race AB's, and 4.10 gears
Stock dyno on 4.10 gears only was 270.58 RWHP and 292.31 RWTQ
Exhaust + 4.10's dyno was 282.58 RWHP and 296.06 RWTQ
New dyno with above mods was 330.07 RWHP and 336.45 RWTQ
By the numbers from 2,530 to 6,020 RPM
Max Gains were 65.6 RWHP and 57 RWTQ
Peak gains were 59.49 RWHP and 44.14 RWTQ
Average gains were 37.3 RWHP and 43.8 RWTQ
Minimum gains 13.6 RWHP and 26 RWTQ
Tuned by Performance Evolution of Smyrna, Delaware
Other mods include Steeda chromoly tubular radiator support, Eibach Pro springs, Eibach camber bolts, Eibach rear lower control arms, ProThane, bullet motor mounts, ProThane full car bushing kit, ProThane front upper control arm mounts, American Muscle strut tower brace, Carriage House Engineering A-Arm brace with torque limiters, AMR 18 x 9"/10" wheels, Nitto 555 275/40-18's, JLT oil separator, SCT iTSX tuner, Webelectric sequential tail lights, DG Customs front billet grille with hidden fog light kit, Cervinis side scoops, and GT500 cloth top.
Performance mod list: Western Motorsports High Velocity Intake, port and polished stock throttle body, Steeda charge motion delete plates and under drive pulleys, MAC long tube (mid-length) headers, off-road MAC ProChamber, Bassani Race AB's, and 4.10 gears

Stock dyno on 4.10 gears only was 270.58 RWHP and 292.31 RWTQ
Exhaust + 4.10's dyno was 282.58 RWHP and 296.06 RWTQ
New dyno with above mods was 330.07 RWHP and 336.45 RWTQ
By the numbers from 2,530 to 6,020 RPM
Max Gains were 65.6 RWHP and 57 RWTQ
Peak gains were 59.49 RWHP and 44.14 RWTQ
Average gains were 37.3 RWHP and 43.8 RWTQ
Minimum gains 13.6 RWHP and 26 RWTQ
Tuned by Performance Evolution of Smyrna, Delaware
Other mods include Steeda chromoly tubular radiator support, Eibach Pro springs, Eibach camber bolts, Eibach rear lower control arms, ProThane, bullet motor mounts, ProThane full car bushing kit, ProThane front upper control arm mounts, American Muscle strut tower brace, Carriage House Engineering A-Arm brace with torque limiters, AMR 18 x 9"/10" wheels, Nitto 555 275/40-18's, JLT oil separator, SCT iTSX tuner, Webelectric sequential tail lights, DG Customs front billet grille with hidden fog light kit, Cervinis side scoops, and GT500 cloth top.