Variable Resonance Induction System: Notes

WARNING: This page is about a different car, the 1995 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.

VRIS RPM SPECIFICATIONS

RPM		Position
Shutter Valve No. 1
Less Than 3750		Closed
3750-6250		Open
More Than 6250		Closed
Shutter Valve No. 2
Less Than 4250		Closed
4250-6250		Open
More Than 6250		Closed