On a new or new-ish vehicle keeping the rpms down and rate of rise on loading and throttle is critical.Has this exhaust been tested on a dyno yet to confirm no gains?
Ther HP gain might happen up[ higher in the rev range, useless. The torque curve will rise up as well, useless.
You will never feel or gian anything with a few horsepower where you'll never use it.
Toque moves the vehicle, accelerates the vehicle, HP maintains speed.
It sound and a good replacement when necessary.