FQ was rumored to have stood for f***ing quick (profanity), flipping quick, or whatever you like to call it. the MR mean Mitsubishi racing.
Check out wikipedia and any other sources and they will all say the same on the meaning of FQ.
Another Source: http://forums.e-mpire.com/archive/index.php/t-17416.HTML
Mitsubishi evo FQ-400
Mitsubishi EVO 10 FQ-400, 410hp/400ft-lbs. 3.8 0-60mph limited to 155mph
Mitsubishi Racing.
Gdi
east side
It means f*cking Quick
Viscous, Realtime-4
specific model or make.
It traditionally stands for 'economy sedan' - although with Mitsubishi not readily revelaing it, it could mean something else.
If your talking about The car, it stands for Evolution Mitsubishi lancer evolution
The acronym MIVEC stands for Mitsubishi Innovative Valve timing Electronic Control system. It is the name of an engine made and released by Mitsubishi.
GS=GRAND SPORT GST=GRAND SPORT TURBO