Pay in 4 interest-free payments of $161.88 Learn more
Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Easy to install
Purchasing a custom tune requires you to submit datalogs and entitles you up to six (6) revisions
Adjusts Ignition Timing
Important note for all Android users
G80 G82 M3 M4 STG1 Fuel System Upgrade Diagnostic Easy to installStage 1 fuel system upgrade designed to increase fuel delivery capacity for high horsepower S58 applications. This system is designed for BMW G80 M3 and G82 M4 platforms where additional low pressure fuel supply is required to support upgraded turbos, port injection, and higher ethanol blends. Our STG1 Fuel System Upgrade adds a second in tank fuel pump while retaining factory style plumbing and fuel routing. This allows the system to maintain stable
