As a new tuner I have been reading threads from FM4-FM6’s tuner garage forums about tuning in general. From cause and effect of adjusting settings to suggested base tunes and addressing issues. The one thing I have not seen is a thread covering telemetry interpretation. I have seen pieces here and there but not a comprehensive explanation of what each page and its data is for in one thread. What the data is saying is happening that is a problem, needs to be corrected, can be improved, or what it should look like for how the car handles for your driving style. I understand part of tuning is by feel and lap times but, the data available for review is also helpful. Making sure I understand it should help me tune better. In case someone does not know, the telemetry screen is accessed by pressing up or down on the d-pad and using d-pad left or right to scroll while in a vehicle on a track. It can also be accessed via replay screen by pressing on the T in the lower left of the screen and scroll left or right with bumper buttons.
I’ll start by commenting on each telemetry screen. What I use it for and what I understand or don’t understand about the data being displayed. I think it would be more helpful to new tuners or anyone that does not understand something for a more experienced tuner and or driver to drop some explanations for each screen. What good data from a good tune should look like. Problems the data is indicating. The relationship with different settings in the tuning menu. Please correct anything I have stated incorrectly, add something if it is missing, and expound wherever you would like to. Thanks.
I use this screen to find shift points for straight line acceleration and initial gearbox setup if I have fitted a racing gearbox.
I think of this screen as the grip circle of each tire. How much grip is available from each tire. Red no grip. Green grip available with the size of the circle increasing indicating a higher amount of grip. Lack of grip indicates loss of contact patch for one reason or another.
This screen displays the loading and unloading of the spring. As the spring compresses (load) the white bar raises and the offset number increases. As the spring decompresses (unload) the white bar lowers and the offset number decreases. Basically weight transfer, complete loading or unloading, bottoming out, behavior over curbs, and wheel hop. Directly impacted by springs and damping.
Body Acceleration Tab
I am not sure about this one but, right now I think of it as a g-force display showing how much pitch or roll the car is experiencing.
Tires, Misc. Tab
Displays information for all four tires. Individual overall tire temperature, pressure, camber, and wear. I usually settle between 32 to 33.5 psi warm temp. Camber… I struggle with alignment and the adjustment relation between camber and caster based on telemetry. I have read explanations but I am still not positive I adjust this correctly. Directly impacted by tire pressure, tire compound, springs, damping, anti-roll bars, and alignment. I think downforce as well because higher downforce should wear the tires faster.
Displays the inside, middle, and outside individual tire temperatures.
Damage level of each component listed. Does anyone use this screen on a straight in endurance races for anything?