Bringing up this old thread to add one piece of information I had overlooked previously:
The documentation I have on the 2G #609 MAS indicates a pressure drop across the MAS of .92 psi at 240 liters/second of airflow. The spec on the #482 MAS is only .54 psi at 240 liters/second! That's probably good for 3-4 HP right there! /ubbthreads/images/graemlins/grin.gif
The EVO8/9 MAS is only rated at .526 psi pressure drop at 240 liters/second, in case you were curious. More good reasons to choose a #482 3G or EVO MAS over a 2G MAS. /ubbthreads/images/graemlins/wink.gif
Also, just to repost since it comes up fairly often, the #501 MAS is NOT as good as the #482 or EVO #399 MAS. It is only rated by Mitsu for 210 liters/second, and has ~.78 psi pressure drop because of the larger airhorn blocking the inlet.
I am now stocking complete packages of the good #482 MAS with the 1G-to-3G harness adapter:
#482 MAS package
Quoting 1uGlyGalaNt:
Are they good for more power than a 2g mas?