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Thread: Exhaust note
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Old 12-31-2012, 03:50 PM
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Mr. Grumpy Mr. Grumpy is offline
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Join Date: Aug 2011
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Mein Auto: 2017 540i xDrive
Quote:
Originally Posted by PeterC4 View Post
I was hoping for COBB too, I went with Burger JB4. They have downpipe mods too, the JB4 has been trouble free in very hot and cold weather...and makes a real difference. There are 2 stages, I have stage 1.

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I was about to buy the JB4 stage 2 until I saw this post on another forum.
http://f10.5post.com/forums/showthread.php?t=784125

As you can see on the Dino sheet the JB4 still needs to be refined. If they manage to refine their tune I might buy it.
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