the P11 is stronger than the B13/B14 trans. I'm tuned to about 300 whp, but I know of guys running up to 500 whp with them. The P11 gears are better than the B15 by about 6%. The only gears you hear in the video is 4th, and 3rd going into the Omega. The front straight is mostly 4th to redline, about 138 mph. I might have done 5th, but probably only did a handful of times all day.