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Before reading my answer below, please note that I do not receive any credit or compensation whatsoever for my time and effort until the green ACCEPT button is pressed. Thank you.

Hello and welcome to JustAnswer BMW,

My name is XXXXX XXXXX it will be my pleasure to assist you today.

I am not sure what exactly he is referring to by "intake flash" but if you have a problem with your crankcase vent valve changing it will definitely improve idle and drivability and power

if the ccv is bad, definitely have it changed right away. it is a very common failure on this engine

I hope that is helpful, please let me know if you have further questions, or if I can clarify anything for you.

Best wishes to you with your repair.

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thank you in advance.

Steve