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      10-30-2019, 02:47 PM   #4
Twt
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Drives: 2017 M2
Join Date: Sep 2016
Location: Atlanta

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You can download the free MLaptimer app to your iPhone. Once on track you will see the MLaptimer in vehicle settings ( it may appear elsewhere in the Comp)...it connects by Bluetooth. Just click on record at the start of your session and end when in pit. You will find an amazing amount of useful data, including laps times, top speed, brake steering and throttle tracing, etc. It can even activate your GoPro. You can also overlay laps to compare a pro driven lap to yours, plus exchange lap data with others on the app. I am not sure why others don't find this useful, but for me it is simple to use and very informative. I have stored my laps for the past 2.5 years and can see improvements with car mods, tires, and driving.
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