Specs for any add-on board would be submitted to the CRB just like any other approved part. The process to do this is already in place as this is how it is done for the touring catagory. It is clear to me that when people say things aren't tunable that they have not looked at all the options. If it has a a chip it has a program. If a pompass clod like myself can de-solder a chip and solder in a socket then anyone can do it. Look at the technosquare link, they sell Techtom stuff which seems to have the largest Jap car coverage.