I will work on a
guide. The hardest thing was working out which wires i needed to tap into.
You tap into gearbox speed sender, although its not designed for vag cars it does give a reading.
It takes the engine RPM and divides this by the vehicle speed so it stays constant. Mine has a reading of 145 in first gear. You input this into the apexi and set the duty cycle according to the level of boost required. This can be done it 5 gears, so for stupidly powerful applications like IHI. Mine doesn't spin much in 2nd in the dry so 1st gear is the only limited gear, but iam going to do setting B for wet weather where 1st, 2nd and 3rd gear are a big
problem.