Tons of speculation in the many threads in 2015+ S550 Mustang Sub-Forum regarding a supercharged / turbocharged 5.0 / 5.8 Trinity 2015 Mustang.
In this video at 23:00, Chief Engineer explains that the boost / vacuum gauges are dependent on what engine is in the car. Since Ford has announced 3 engines in 2015 and this vehicle and all the other 2015's shown to date are prototypes, my belief, based on comments starting at 23:00 is that the boost gauge is NOT for a blown 5.0 option available in 2015, but the Eco-boost, available at launch in 2015.
It's like a placeholder, showing what the interior looks like with all available options, i.e. the Eco-boost Boost Gauge.
I was pretty impressed to hear Perciak say the IRS is world class and that they had to re-engineer the front suspension as a result. I'm thinking over 1.0g on skidpad. This will be a dramatic improvement in handling.
its growing on me, I wasnt a fan of the interior compared to the 2010-2014 cars, the randomly placed mustang badge on passenger and way the cheap silver flowed into the dash looked like crap in pics, but this car seems to got rid of that, it has the 2008-2009 bullit mustang style mettalic dash and flows into it .