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      03-15-2020, 11:08 AM   #14
christofis135i
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Drives: 2011 135i White/Red
Join Date: Jul 2017
Location: Michigan

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Quote:
Originally Posted by dtla1 View Post
I honestly hear no difference, not sure what you all are talking about. Maybe it's because i'm always focusing on the sound of the Performance Exhaust?
Oof I didn't see this. When installing the DV+ in the instructions it has an option for a 2nd spring, I believe it goes between the housing and plunger. Something about making a different sound. If you didn't use the spring it acts as the stock Diverter valve, just more durable.
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