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      04-23-2014, 11:43 AM   #3
w5pwr
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Drives: 2013 F10 M5
Join Date: Mar 2013
Location: UK

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Quote:
Originally Posted by drbru View Post
So im looking to purchase an Eisenmann Race backbox but im getting mixed views with regards to what this will do to the manufactures warranty and the extended warranty when I purchase it next year

The dealer is essentially saying its ok but BMW is saying that it will void the entire warranty which seems a bit OTT

Does anyone have any experience with this?

Cheers
I ran an Eisenmann Race on mine for about 6-9 months and had no issue with the two dealers I use. In the end i took it off as I was not keen on the level of drone it produced at cruising speed on a daily drive.

It did make a great sound.....
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