TSG Heavy-Duty ECM & TCM Tuning Experts – From $1,500 to $10,000

"At Top Secret Garage, we specialize in professional ECM and TCM tuning for all major engines. From trucks and heavy machinery to pickups and commercial vehicles, we maximize performance, efficiency, and reliability. Our expert team works with leading brands such as CAT, Detroit, Hino, International, Isuzu, Mercedes-Benz, and Paccar to deliver custom tuning solutions tailored to your needs. With more power, better fuel economy, and optimized performance, we make sure your engine runs at its absolute best. Prices start from $1,500 up to $10,000, depending on the service and customization level."