The Nissan Skyline R33 APEXI Rev/Speed Meter Gen 1 is a performance-enhancing electronic control unit (ECU) designed for cars. Manufactured by Apexi, this product does not come with a manufacturer warranty. It is specifically tailored for the Nissan Skyline R33 model, providing precision control over the vehicle's revolutions and speed. Ideal for enthusiasts looking to upgrade their car's performance, this Apexi ECU offers reliable and efficient tuning options.