Steeda Autosports has just finalized their 2015 Mustang GT tunes for a stock setup with a manual transmission.
When they first dynoed their 2015 Mustang GT Performance Pack, it made 391.93 RWHP and 356.28 RWTQ. On that same stock car (93 octane), with solely a tune, Steeda was able to post 409.99 RWHP and 366.74 RWTQ for an increase of 18 RWHP and 10 RWTQ.
See the full dyno chart and read about Steeda’s product updates in the FORUMS.