Welcome to Tristate Tuning & Service, your premier destination in Britton, MI, for professional light, medium, and heavy-duty diesel repair, agricultural equipment service, and custom performance tuning. Serving drivers, farmers, and fleet operators across the Michigan, Ohio, and Indiana tri-state area, our experienced technicians specialize in maximizing engine power, fuel efficiency, and field reliability. We offer specialized custom tuning and complete repair services for tractors, combines, farm machinery, semi-trucks, and diesel vehicles. From advanced diagnostics and custom ECU performance tuning to routine preventive maintenance, mobile/shop engine work, and complex equipment repairs.