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Discussion Starter #1
Does anyone know what the web address for the Japanese site?
Or if there even is one?

I have a Kreissieg exhaust on my M5 however I need to get the instructions and the switch so I can switch up the valvetronic.

Any info would be appreciated!!
 

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Post a video when you get it right, I know ther's a lot of members on here who want to hear that exhaust, both "on" and "off"
 

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You paid 8k for this man your insane. Has anyone dyno tested this stuff on the M5?

My brother had one on his Ferrari and with the system full OPEN it lost 18hp.

Sounds sick but not for me
 
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