broke in the 2.5r at a local track this weekend wow that is one nice motor in my opinion is seems much smoother that my 2.5 especially at part throttle runs, got to play on the track with some other high dollar boys after i got it broke in and to my suprise the rusty was kicking ars that truck flys thru the air beautifully i did notice that after running 4 5minute sessions i a shock leaking but nothing major a big thumbs up for the rusty