I have heard time and time again about how the TRE got rid of the off idle jerkiness and low speed ridability problems. I installed one on my 03 since it had 25 miles on the bike and only found the benefits to be in the throttle response in the first three gears. It did not get rid of the jerkiness nor did it fix my off idle cruising. What fixed these problems was a remapp of the computer VIA a Teka SFI unit from Factory Pro. I do believe in the TRE but I want the ATRE for the programmablility, this is so I can use 4th gear timing map for the first three gears then leave 5th and 6th alone. Do you honestly need the top end restrictor inhibited? In my opinion no, this coming from a person that lives in Kansas where that is all there is to do is go fast in a straight line. I do like having the full timing in the first 3 gears but I did not see the benefits of it fixing my off idle drivability problems, like I said before the only true way to fix that is to remap the computer.