I've had the Cambelt/Aux Belt and Water Pump changed in one operation on our 3 cars:
Volvo = Whine afterwards (Volvo Water Pump used)
Citroen = Whine afterwards (Citroen Pump used)
Renault = No Whine after
I don't know the reason for it other than the Cambelt Kits were perhaps different to the original factory fit.
I must say that the whine is more at high revs say ~ 4000rpm +
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2005 S40 T5 SE - Manual. Bilstein B4's. (For Sale)
2010 Citroen C4 1.6 HDi (bizarre Gearbox model).
2010 Renault Twingo (refreshingly simple)
2018 Infiniti Q30 1.6T Business Executive (what's this button do?)
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