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      11-14-2020, 03:14 PM   #4
Jad_Pal
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Palestine
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Drives: BMW Z4 30i
Join Date: Jul 2020
Location: Palestine

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Quote:
Originally Posted by Combatcrew2 View Post
Quote:
Originally Posted by Kolenda52 View Post
I have noticed that the drivers side exhaust pipe is black with soot and the passenger side is clean looking. Are both pipes active or is the passenger side just for show?
The passenger side has an electric operated flap valve. If you select sport mode you will hear the exhaust note changes. Perhaps you are not getting to use the car as much at the moment on the faster roads?
Quote:
Originally Posted by Combatcrew2 View Post
Quote:
Originally Posted by Kolenda52 View Post
I have noticed that the drivers side exhaust pipe is black with soot and the passenger side is clean looking. Are both pipes active or is the passenger side just for show?
The passenger side has an electric operated flap valve. If you select sport mode you will hear the exhaust note changes. Perhaps you are not getting to use the car as much at the moment on the faster roads?
The question is: does the sport mode close or open this electric flap valve ??
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