I have just fitted BC sleepers to my 06 T100 and removed the airbox which is now basically the same set up as my 05 Thruxton except that the Thruxton has Madaz mufflers fitted. I gave the bike to a local mechanic to set up the jets and give it a tune (Which I had him do only about 600Kms earlier before I decided to do the up grade) but what has surprised me is the Thruxton hits reserve at 180Kms and the T100 which use to hit reserve at 190kms is now hitting it at 214Kms. That is a whole 34Kms difference to the Thruxton..... nearly another trip to work!! I don't know if this is an issue for the Thruxton or something I should be worried about with the T100 (Running too lean???). I am unsure as to what jets sizes he used but it seems to run good, revving right out in each gear and great off the line. When everything was first fitted up and not touching the jets giving it a test ride before handing it over to him you could feel it run flat as the revs picked up..say at about two grand and up so he definitely has increased the sizes but I thought the economy would have definitely went down to be about the same as the Thruxton not got better then what it was originally.