The motors (3 port sport, 3 port race, 7 port turbo) all seemed to be very flat with that pipe. Did not have good bottom, mid or top. With the other pipes (Dynamite 086, 053, JP1, JP3) there was a noticable range where the motor performed better but then with the Go 2047 it seemed you kept waiting to for something to happen and it never did. Not sure how to explain it other than the motors seemed flat. 2 of my race buddies even made the same comment.