Matthew R. Talamo, owner of Southern Diesel Truck Co., was sentenced to four years probation and fined $50,000 for modifying emissions controls on over 200 pickup trucks from 2018 to 2022. Talamo disabled hardware and software, tampering with on-board diagnostic systems, leading to increased pollutant emissions. The company specialized in aftermarket modifications that removed exhaust components lacking emission filters, resulting in reduced maintenance costs and improved speed and fuel efficiency for the owners.