i-Vtec controls the lift, different lift at different RPM. same as the VVEL on the 370Z difference being that you guys have a stepper motor to control the Lift AND duration. vs Honda having a Solenoid. the VQ engines have adjustable Cam Phasing in borth Intake and Exhaust. which is basically an adjustable cam gear. once the VVEL is cracked. if it can be tunned for better power and efficiency it will rock so hard i will most likely trade in my Z33 to a Z34
thats my understanding atleast.
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