As other GTR owners I have been frustated with this Boost Controller, FINALLY I found the manual and it is a lot easier to set up. Hope it helps,
Alberto/From Misawa, Japan
http://www.alamomotorsports.com/greddy/PROFEC_B_SPEC2.pdf
Alberto/From Misawa, Japan
http://www.alamomotorsports.com/greddy/PROFEC_B_SPEC2.pdf