Hi again Abdulla, hope you are all staying safe out there. My Meglio,( Now Sold, now have R26 360bhp.) had overheating problems, Not cured, even by vents and grill removal. I found,Radiator fan, was the wrong way around, trying to blow air from the engine compartment, back through the Rad. Having sorted that, the vents remained covered up, even on track, and never had any more problems. I have heard of a couple of others as well, so check, just in case.