Although we don't need ANOTHER Kev mod review because we know it works, I am so excited I had to share. Got the magic little box few months ago from Kev but was slow in getting the DNA filters, anyway got 1&2 now, fitted in 10 minutes, Kev mod wired up in 5 minutes set to 4'o clock and onto test ride...WOW, from start up I could hear its idling smoother even(I am an ex auto mechanic so kinda know what Im listening for(no placebo effects etc haha). Out the drive-way and low revs no snatchy hiccups at low revs. Few blocks of warming up and then next stop street pull away...wooohoo!! yeah baby this is now more a 660 single!! Seat of the pants feel much better(once again this is (about) my 34th bike so I don't need a dyno to confirm it runs much better.. Every 660 ever made should have this done otherwise you just riding an old xt500 with fuel injection...LOL GOOD work KEV!!