Lots of changes have just occurred on our NASA TT3 classed 2011 Mustang to allow us to fit these…
The exhaust was also tweaked and then the car was re-tuned at True Street Motorsports, and we found out that it is now making 442 whp. Not bad for a bone stock engine!
Read about all of the changes and upcoming events in our latest S197 Mustang Build Thread entry at this link.