GenBoard/UnderDevelopment/AlphaN says-

pw = req_fuel * MAP * VE(RPM, MAP) / lambda(RPM,MAP) * gammae * ego_corr (speed density: config13 bit2=0)

pw = req_fuel * VE(RPM,TPS) / lambda(RPM,TPS) * gammae * ego_corr (with alphaN, without MAP: config13 bit2=1)


How does the MAT enrichment table factor in the gammae value?
  • airden: gas law, appr. 10% enrichment for -30C change in MAT
  • baro: there is a linear 4% enrichment for 10% less than normal baro (to compensate for more gasflow caused by lower exhaust backpressure)