Slk55 exhaust flaps - Mercedes Benz SLK Forum

AMGs For those high performance Mercedes-Benz R170-SLK 32/R171-SLK 55/R172-SLK 55 cars tuned by AMG -

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#1 Old 07-23-2012
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Slk55 exhaust flaps

Is it possible to open the exhaust flaps by plugging up a vacuum line.if not,any suggestions on how to open them
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#2 Old 07-23-2012
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Hi Cabinettec

We have flaps ????

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#3 Old 07-23-2012
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The R172 IIRC has flaps within the exhaust system, mainly for sound effects.

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#4 Old 07-24-2012
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I was at vw show and there was an r32 there,the person that owned the car said his flaps were controlled by a vacuum line that he was able bypass and keep them open.do we have the same option?
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#5 Old 07-24-2012
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As has been pointed out: there are no "exhaust flaps" on the R171 cars.
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#6 Old 07-24-2012
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I was also told that there are "flaps" on the R172. If anyone knows who we can manually open them, (if that is possible), please let me know!!!!!
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#7 Old 08-05-2012
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Just floor the accelerator and they will open up every time!

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Originally Posted by dcool930 View Post
I was also told that there are "flaps" on the R172. If anyone knows who we can manually open them, (if that is possible), please let me know!!!!!
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#8 Old 08-05-2012
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I thought I read leaving it in sport mode keeps them open (R172) I may be wrong though.
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#9 Old 08-06-2012
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In my previous 2011 BMW 135i, there was a vacuum line near the exhaust tip that you could either plug or squeeze and ziptie so that the flap stayed open. The R172 may have something similar.

The R171 however, has no flap.

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#10 Old 06-07-2013
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I have an 2013 Slk 55 AMG.

The exhaust flaps is droven by an electric motor in 3 or 4 steps.

I think its just to unlock two bolts on the electic motor and lift it up from the shaft.
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#11 Old 06-07-2013
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