My car actually has close to 11K now but I noticed around 10K my car started to perform better. The car used to have a slight hesitation when pulling thru 1st gear (MT), not a big deal, but now, it just pulls smooth, and the car pulls stronger thru the gears now. The exhaust note also has changed, it's more louder now, especially in the upper end of the rev range or when I plant my foot on the gas. I feel the engine is now fully broken in. Given my driving style, it has taken me this long. I'm sure for some, this has come alot sooner. Man, I didn't think it could get better, but it did!
Danny