Post by
blueis300 »
https://forums.nicoclub.com/blueis300-u72851.html
Mon Oct 06, 2008 4:13 am
ou are confusing the 00-01 VIAS with the 02-03 VIAS. As Sloppymax already posted, they function differently. The 00-01 VI is closed by default, so when the VIAS mechanism (almost always the power rod that opens the valves) is faulty, it remains closed, so it mainly affects the upper RPM ranges. On the 02-03, the VIAS has its default position as open, but is closed via vacuum and ECM control from 1800-3600 rpm, so when any part of that mechanism is faulty, the valve remains open throughout the RPM band.
The other pages I read as there is tons of info wont work on 2001 back.