If you want to compare from a "failure" side, SD doubles your potential for failure on a sensor malfunction standpoint.I prefer the Speed Density / MAP & IAT Sensor option as this clears out the MAF Sensor.
You don't need to care about good airflow to the MAF Sensor. Now you can concentrate to get a good flow towards the turbo itself. If that makes sense at the powerlevels we are.
And I feel like MAP/IAT Sensors aren't as prone to failure as MAF Sensors are.
But this is just a guess from my side with no actual experience to it/based on how those sensors are constructed. Someone who knows better might correct me.
Thanks mate!If you want to compare from a "failure" side, SD doubles your potential for failure on a sensor malfunction standpoint.
I personally prefer using a MAF, however, there comes a point at higher power levels where SD has it's usefulness. For the most part, you lose resolution as you scale higher. In the case of a Subaru with a FMIC, you end up with so much piping that it can delay a MAF signal and then you need to vent it back into the inlet.