fuel ratio to the amount of airflow. Now instead of a split filter (half air to each side), there is a single filter per side. A lot more airflow. You can run the system with only 1 MAF without the use of a dummy. Doolz are still a double intake system but with an air regulator sortof like a balance tube. not sure if that clears anything up or not but i tried. ~matt~
been a member ever since i owned my 1st 300zx i love twinturbo.net thanks guys