Did you use the wire clamps or did you solder the wires? When i used the clamps i didn't get a good connection so it wasn't very noticable. I then took the clamps off and twisted the wires, it was a little faster but idle was rough. I finally got the time and soldered the wires and i could actually feel a nice difference. I've had the piggyback for well over 6 months and finally soldered it 3 days ago.

 

I soldered them. Maybe If I just go back to the test pipe I will feel more of a difference. But then I have to worry about the popos

 

road race recomends that you solder them...so there are no issues