Data loggers - many of us have them, I rarely see them being used. Read of the article below and see how professionals ( that is people paid to be at a race track all day ) use data to go faster in a practical way.
Key points :
* the logger does not have to be expensive. An Aim Solo DL or the logger built into an ECUMaster ADU dash for free come to mind.
* having a decent lap to compare to is the most useful thing you can have. Doesn't matter if it was yours or someone else's.
* braking, braking braking. In my experience most drivers can apply the throttle as well as each other. Time to be made up is on the brakes. And to understand that you need a brake pressure sensor. This article confirms this fact. ( caution, the car in the article is bound to have ABS so this does encourage pushing the brake pedal far too hard and letting the electronics do the rest )
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