Originally Posted by Beemw335
It actually does.
Its not advertised to add power, but if you go on mustang forums many owners have done before and after dynos and it does in fact add about 30 hp.
Warranty is reduced to 3yr instead of the typical 5yr.( only if ford believe the problem was caused by the tune)
I am on a few Mustang Forums and there are dynos showing it does NOT add power.
here made a few lb ft more and less HP
This guy gained 7-8 hp with Track Key - that could be dyno variance
and ive seen some more