G80 G82 M3 M4 STG1 Fuel System Upgrade Diagnostic Adjusts Ignition Timing

Adjusts Ignition Timing

Ethanol Content Analyzer

and STG3 systems

Purchasing a custom tune requires you to submit datalogs and entitles you up to six (6) revisions

G80 G82 M3 M4 STG1 Fuel System Upgrade Diagnostic Adjusts Ignition TimingStage 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