One surprsing gain I had was tires. I ran a few weeks on a 28x10.5 stiff wall tire a friend gave me. I moved from that tire to a pro bracket radial in the same size and shaved a good .05-.08 off the 60ft time.

I run a high resolution driveshaft sensor and there was no traction problems with the bias tire. They did have a different curve on the driveshaft speed but I believe the difference was the sidewall wrapping up on the bias tire because it was at the hit and for a microsecond.

It ran better MPH on the bias tire but that is because the engine was tapped out on RPM due to a forced gear change(broken 8.75).

I am terrible at note taking and logging passes. My Dad takes all my slips at the end of the day and logs them into a spreadsheet with the splits on it(Thanks Dad!). But I don't add enough notes to look back a year or two and remember what I changed