|
I don't mean to try and start anything this seems kind of a sensitive subject haha, but from my knowledge of the way the ECM works it will do a good job of adding the extra fuel needed with the extra airflow a ported intake should give. The way more power is made is usually from increasing airflow, the maf and map sensors (mostly the maf) is there to meter this extra airflow and inject a proportional amount more of fuel giving you more power. So technically any increased airflow you get the ECM should adjust accordingly. However, there are plenty of other reasons you actually need a tune. For example, past a certain increased airflow the ECM will go into a protection mode since it thinks there is a problem with the electronic throttle (bad), the ecm expects a certain amount of airflow and it will cut back power for safety reasons. There is also a lot of other reasons for drivability, shift quality, preventing check engine lights, if you get a cold air intake that moves the maf sensor, etc.
I just think people make too big of a deal with the tune thing, a ported intake and TB won't increase airflow enough to cause any problems, since the ecm is designed for a little extra room.
|