034SPI is a comprehensive car tuning app designed for iPhone/iOS and Apple Silicon-equipped laptops. Developed by 034motorsport Industries LLC, this free app enables users to flash their cars, change fuel maps, configure live data displays, record and submit data logs, and access diagnostic support tools such as DTC/CEL code read/clear functions. The app is compatible with Dynamic+ ECU or TCU tunes and the latest Dynamic+ End User Flashing Dongle (May 2023 & newer).

The app offers a range of features including complete ECU or TCU tune flashing, quick file changes, internet-based flashing, enhanced flashing protocol protections, user-configurable live data displays, high-speed data logging, easy log uploads to 034Motorsport servers, free data log analysis services, DTC clearing, emissions monitor status viewing, adaptations/recalibrations, and more.