Installed a new 3.9 R&P and took over a second off my previous best - 4 laps in a row. It's not often you get so much open track without coming up on slower cars.

Car: 1990 Miata
Weight: est. 2350 w/driver
WHP: ~270
Tires: 225/45/15 NT-01
Ambient Temp: 55F

Notes: First time out with 3.9 gears provide more than a full second improvement over my previous personal best for 4 laps in a row. Tire pressures were a little too high in the front so the car was tight and I should probably take some wing out but overall, I'm very happy with the progress. The tires were 4 year old scrubs I got from Bob that had all the traction of Big Wheel slicks the first session but thankfully they got hot and sticky for the rest of the day. Here are the 4 laps - the fastest is the final of the 4 but they are all within .5 seconds