MAF Sensor Scaling Calculator

Calculate MAF transfer function scaling for injector and airflow modifications.

Injector Information

lb/hr
lb/hr

MAF Sensor Information

inches
inches
Leave same as stock if not changing housing

Current MAF Values (Optional)

V
g/s

MAF Scaling Notes

  • Larger injectors require MAF to report LESS air
  • Larger MAF housing = lower velocity = needs rescaling
  • Always verify with wideband O2 after changes
  • Some ECUs require inverse scaling
  • Speed density tunes bypass MAF entirely