The 2015 Ford Mustang EcoBoost is a marvel of engineering, kicking out 135 horsepower per liter and stacking up more power than the V8 GTs could muster a decade ago.
It's also a sticking point for dusty old traditionalists, the kind of change-fearing bozos who can't stomach the idea of a Mustang with anything other than an eight-cylinder lump.
And that's fine. If you want a V8 Mustang, buy a V8 Mustang. It's phenomenal—it nearly won our Performance Car of the Year competition, beating out cars that cost more than a modest house. And it makes all the same sounds that got your daddy thinking about Van Halen music videos and your granddaddy thinking about Parnelli Jones.
The turbo 2.3-liter EcoBoost Mustang isn't for traditionalists. It offers a different take on performance, one that's familiar to gearheads who grew up on small-displacement turbo imports.
But the stock exhaust note is still a little too mundane, hardly showing off any of the turbo's character.
, which fits both the 4 cylinder EcoBoost and the 3.7L V6 Mustang, does a good job changing that. It's definitely louder, and more turboey sounding.
Traditionalists will say it still doesn't sound like a "real Mustang." It was never going to. If you ask us, it sounds good. And that's all that matters.