I went with the 375 kit on my MSE as I didn't want anyone opening up my new engine. I was after more low down torque and a better sounding exhaust, it had to be tractable around town and a smooth idle, I'm very happy with the result. My car went from 239rwkw to 282rwkw. I don't have the increase...
I hear you, but mine has 1,300 k’s, Walkinshaw kit with bi-modal, $7,200 plus custom cover $800, plus 3M front end protection $1,400, and more, over $10,000 on top of the car
I don’t believe all cars that are modified are thrashed. I put the w375 pack on my manual MSE primarily for the sound and that bit extra pick up from the increase in torque it provided making the driving experience more enjoyable without revving it out. Other than on the Dyno, mine hasn’t gone...