Talk to people that have a yellow icon above them. they will ask for a favor and just complete it. Fight in the fight clubs, massive face for first time through. Street racing adds a lot too. Going on the dates will also increase it. Singing karaoke at Club BAM BAM raises it.
Fight club is by the dojo where you turn in the statues. In order to build face just run around town until you see the yellow markers pop up on your map, then go there and do easy missions. REAP BENEFITS.
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