Subaru forester,sti,wrx,impreza tuning
Subaru forester,sti,wrx,impreza tuning
Improving engine power through mechanical upgrades such as free-flowing exhausts, intakes, turbochargers and intercoolers will boost the amount of airflow into the engine over stock. Any increase in airflow is immediately picked up by the air mass sensor. This causes the following things to occur: