GReddy Sirius Control Unit

GReddy is the brand of Trust Co., Ltd., a Japanese tuning company founded in 1977. Trust raced in the Japanese Touring Car Championship, IMSA and at Le Mans, and the GReddy name became one of the best known in tuning through its turbo kits, intercoolers, boost controllers, gauges, exhausts and oil systems.

Trust's turbocharged builds and parts were a large part of the Japanese tuning scene of the 1980s and 1990s, and GReddy parts are still made for most Japanese performance cars, from the Skyline GT-R and Supra to the GR86 and Civic Type R.