You had twins though. :
I didnt mean to sound like an ass with my first post...I realize how that looked and I didnt intend it to be that way. Ive just never seen anyone go that fast on a single CP3 without twins.
I didn't take your post that way Ben , but a S475 as a single will run with 366/480 twins in total airflow , and regardless of turbo's used it isn't / wasn't easy , very few will dial a truck to that level .