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      11-20-2012, 04:43 PM   #95
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

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Quote:
Originally Posted by zibawal View Post
Is Dynno must after installation? My local guy did not do it on my X5?
Would you know who dies dyno in sfo Bay Area?
No you just install the N55 Stage1 and enjoy the extra power.

To answer another question no mileage changes during normal driving.

Mike
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