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The C code is made by different functions. All the files should be well commented, but you can refer to Kevin's page to have an idea of what everything does.
TEA FILES
In my project I am using a new TEA file which sets directly the PWM (the name of the file is pwm_control.tea). So the main difference is that you won't find in my C code the variable 'throttle' and in my TEA files the dynamic maps. If you need to use them, you can find all the TEA file in the dropbox folder.
CPS CODE
Again, this is made by different function. I used for a while Kevin CPS but then I modified something in the projection to have it correctly. Also care that in Kevin CPS folder you will find the old .txt file with just 10 point, but to have a better projection you need a larger number of points.