Turbochargers and turbocharger combustion efficiency systems comprised of turbochargers and air-compressors for increasing efficiency of engine systems in diesel and gas powered vehicles, diesel and gas powered trucks and buses, agricultural equipment, construction and mining equipment, namely, dozers, excavators, graders, loaders and drag-lines, marine equipment and marine vehicles, namely, boats and ships, locomotives, and stationary equipment, namely, electric generators, water and sewage-pumping stations; turbochargers for stationary and moving diesel powered motors in the nature of turbines, pumps and generators; turbochargers for stationary gasoline powered motors in the nature of turbines, pumps and generators; Air-Intake vacuum and compressor system comprised of turbochargers, air-compressors and turbines for turbochargers to enhance turbocharger performance for moving and stationary diesel and gasoline engines; air-boosters in the nature of air compressors and tanks for moving and stationary diesel and gasoline engines; Exhaust-line vacuum and compressor system, namely, a system comprised of compressors being parts of diesel engines, to alleviate exhaust back-pressure and turbochargers for engines