B4x Engine Specifications
B4x Engine Average Power Figures
B4x Performance Upgrade Guide
B4x Common Mods
B4x Servicing & Maintenance Information
B4x Turbo Upgrade Info
B4x Part Cross Compatibility List
B4x F Series B48E Turbo Retrofit Guide
B4x Mini Cooper B48E Turbo Retrofit Guide
B4x G Series B48E Turbo Retrofit Guide
B4x Built Motor Guide
B4x HPFP Flow Rate Data
B4x Injector Flow Rate Data