BMW E46 M43B19 Cam Upgrade – 121HP by DMS TUNED

High mileage does not mean the end of performance. This BMW E46 M43B19 with 320,000 km came in stock at 102hp and left significantly stronger after camshaft upgrade and proper calibration.

BMW E46 M43B19 dyno result DMS Tuned BMW E46 cam upgrade DMS Tuned BMW E46 dyno graph after cam upgrade BMW E46 M43B19 engine bay DMS Tuned

Results

  • Stock Power: 102hp
  • After Upgrade: 121hp
  • Torque: 187Nm
  • 320,000 km engine

What Was Done

  • Performance camshaft upgrade
  • Custom ECU calibration
  • Dyno verification

The dyno graph shows strong gains across the entire rev range. Proper tuning ensures safe AFR, stable ignition timing and smooth drivability, even on a high-mileage engine.

BMW ECU Tuning & Dyno Services

Learn more about our custom ECU remapping services or explore additional DMS TUNED performance projects.