to Tune up or not your car it's your personal opinion
Actually I Like Modenas the way they are ,but... for those who want something special, Fabulous got best kit (IMO)
Exhaust maybe got not this beautifull shape, like stock but maybe this thing got more performance stuff than stock one.
So... First of all I'd like to look at performance spec and to hear Modena with Fabulous Exhaust.
+ CS got more soul-power than any tuned Modena