Which 87 generic tune are you looking at modifying?
The 87 oct tranny(level 1) only or the 87 oct tow(level 2)?
When doing custom options follow this link:
http://dygytalworld.ehost-services13...=9248#post9248
If you are going to do anything run the level 3 then do the adjustments with BJ's settings but make sure you are running the right octane for the tune!
Lars