MY06+ AVCS solenoid 10921-AA080 was designed for 100kkm.  Pre MY06 solenoid runs 200-300 kkm.. EL154 engine was designed for 100kkm in the whole...   2000-3000RPM engine hesitation coming at 80-100kkm is a child of FHI marketing team. After that mileage YOU ARE TO buy a new car according to FHI opinion. 
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