DISA valve/flap issue on E46

ola team ,

am having a 2000 model E46 with M43 engine petrol

had noise coming out of my throttle body after servicing my idle regulator valve .
i was told that it coming from my DISA valve need to be replaced - check the price of the part at bmw , about 4700 rand :cry::

is there any way it can be fixed or any other way around it - my car sound like a diesel, and don't want to further damage my engine

please guys

tx
 
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