Just wondering if anyone else has had a chance to try out the NTMv7 on the K&N car yet?
I just did the 13th Week NASCAR Nationals Series race. First lap the car felt pretty loose, the next lap pretty tight. After that it became more neutral with a tendency to push a little if over driving the exit. It takes a while for the tires to come up to temp and my fastest time was on lap 4. From that point the drop off wasn't too significant, over the 25 laps I only dropped off 0.9 seconds from my fastest time, and the drop off was fairly linear. The overall feel of the car was good, a little snug but that is most likely the setup.
I will have to experiment with some longer runs, as it is mention that the tires fall off a cliff when they begin to wear out. Also it will be interesting to see how effective it is to be conservative at the start of a run. In the race I did I didn't consciously set out to save tires, but didn't abuse them either, driving fast but smooth.