Speed Density not active

[Paoloz]

In the map I found in the ECU the Speed Density was not active and all works on MAF mode

It works quite well especially after I tune the MAF properly, but should I activate SD or not .....which in your opinion are advantages and disadvantages?

thanks

[SiriusC1024]

High RPM Disable is still set to 4000rpm. That means at 4000rpm and below dynamic airflow calcs reference both MAF and VVE. You should tune VVE also.