Well, ive managed only about 200 miles since the build, but here are some observations. Not in order of importance!
1. The fuel economy is unreal, around 40 mpg at 75 mph. If your behaving.
2. The CES header performs really well keeping the torque in the lower rpm range.
3. The acceleration is ridiculous. I havent even really got on it yet!
4. Im not in love with the K&N 4040 filters. They look cool, but they are pretty protruding at the knee.
5. Its not a smoother running engine like some others noted. It runs like a built motor. You can feel it in your chest.
Overall, I'm super happy that I did this. So far at least!
The best part? I know my motor, I got better acquainted with some members here!