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E34 M5 Discussion 1988-1995 Sedan and Touring


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Old 12th May 2002, 19:32   #1
Steven
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Resonance flap question
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When I'm accelerating from around 2500 to 4000 rpm the resonance flap seems to cycle maybe 2 or 3 times is this normal? It is as if there is a slight and brief interuption in acceleration. I also noticed it only does this when the weather is hot or when I have more than one passenger.

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Old 13th May 2002, 17:48   #2
Ben
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Re: Resonance flap question
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When I'm accelerating from around 2500 to 4000 rpm the resonance flap seems to cycle maybe 2 or 3 times is this normal? It is as if there is a slight and brief interuption in acceleration. I also noticed it only does this when the weather is hot or when I have more than one passenger.
That doesn't sound right... There is a full write up of the operating parameters of the resonance flap in the FAQ:

What is the intake resonance flap?
http://bmwe34m5.com/faqs/?theme=1&le...nt_id_select=3

I'd also take a look at the Technical Article mentioned in the FAQ:
http://bmwe34m5.com/faqs/?theme=1&le...nt_id_select=3

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