EMS split control
 

hi,

just wondering if there is a list, or if anyone could just quickly tell me, of the various EMS out there for our cars (specifically FC) that control split, and also to what degree.
like for example how many EMS out there let you control relative split, what EMS will let you do negative split, etc.
doesn't have to be standalones either (don't know if there ARE any piggybacks that will control split though).

thanks