Had to post this!

[stretch]

And most people don't tune at the track. It takes $1000 in equipment to do it right.

I would bet any import event only the top Turbo cars MIGHT be data logging during runs

I datalogg everytime we at the track, no matter all motor or turbo. And we tune our cars on the dyno and then make changes at the track according to conditions or if we wanna turn the power up. But datalogging is the only way to get the data needed to get better and faster going down the track
Remember, my tuners is ALWAYS next to me, dyno or track....even at the strip club......hahahahahaha