he can answer you directly. You tell him your mods and what octane tune you will want to run and he may ask for a datalog of certain PID's and you send it to him. He sends you one of his custom base tunes which you load and then drive around and provide feedback and another datalog and send it to him. he will then provide a revised custom tune based on your feedback and logs and then you load it and drive around some more and do some more PID logs. You then send back the newly revised logs and feedback and back and forth it goes until happy.