This 340i M Sport blends bolt-ons that improve everyday performance: Apex Arc wheels with lug-stud conversion and a MAD Gen1 intake for better airflow, CTS charge pipe and AWE non-resonated track exhaust for response and sound. Ikon front lip and M-style mirror caps tidy the exterior, while MHD super tuning handles the calibration. A precision fuel pump upgrade shows fueling reliability is a priority. It’s a balanced build that tightens handling and frees the B58’s torque without losing daily comfort.