Intake Air By-Pass (IAB) Control System: Notes
NOTE:
Intake Air By-Pass (IAB) control system is only used on GS-R models.
The intake manifold provides 2 intake air paths: long and short. Increased engine torque over a broad range is achieved by using IAB control valves to switch between intake air paths. High torque at low RPM is achieved by using long intake air path only. High torque at higher RPM is achieved by using both intake paths.