FFS on a 1990 Cougar stands for feedback fuel system.
FFS is generally an acronym for "For F***'s Sake".
FFS
For F**ks Sake
It means for f*cks sake!!
it means for facks sake
Spherical, ffs............
it was me ffs you biatches! whoop whoop whoop!
Yes.
It's a name ffs.
Who cares ffs, get a life.
combustion
you need to be hench ffs