Tracks around me don't care about the exhaust. A few things I learned at the track:
- The lower the tire pressure (~30 front, 35 rear), the faster I went (bring a tool to relieve air pressure and not use a piece of gravel). Also have a way to air up your tires.
- Clamp your leaf springs if you don't have traction bars (I have them and still clamp the springs)
- Drop the torsion bars (bring a jack, 6x6, and tools to return it to ride height)
- If you're only concerned about your ET, don't worry about "racing" the car in the other lane, leave when the time is right
- Try to arrive at the track with the least amount of fuel possible to complete all the passes, get you to the gas station, and not cavitate the lift pump
- Leave all the extra weight at home but it's handy to bring a friend or two to watch your tools, cooler, etc while you race
- Only do a small burnout to clean your tires off so you don't make your allison mad