Southbay Tuning | ASE Certified San Diego Mobile Auto Mechanic Repair Service (619) 821-2244. Visit http://www.SouthBayTuningMobileMechanic.com Serving all South San Diego County cities like Chula Vista, National City, La Mesa, Lemon Grove, Spring Valley, San Ysidro, Otay Mesa, Imperial Beach and everywhere in between. Emergency Roadside Assistance Service available!