Quote:
Originally Posted by dradernh
It sounds like the rep may have been explaining G Sum, a data channel created by applying some simple math to the lateral and longitudinal g-forces captured by the data logger. G Sum shows how close to the limit the driver is driving the car, especially when transitioning between braking and lateral acceleration. This is a common place for drivers to lose a fair amount of time.
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This is basically what the Apex pro is doing in real time and providing instant feedback using a simple LED interface.
I bought one as it sounded like an interesting bit of kit.
You can do a decent amount of analysis in the Apex app but you can also download the data and analyse it further, I do this in Track Attack.
You can see it in action in my M140i here.
https://youtu.be/o3qSOl-Bo2I