Dual Exhaust on 2011 335 xi

[huyatgr]

Hi all, I have a question about my new 2011 335xi.

After the break-in period, I noticed that the right side exhaust is visibly dirtier than the left side one. So I observed how they worked after start.

It seems right after the engine started, both exhausts worked for a couple of sec, then only the right one was working.

Is it normal? Does the left one kick in when driving at higher rev?

Thanks!

[Jack Dabsy]

I wouldn't worry too much at this stage... Give the banks a little time to settle into the new oils etc... A couple of week maybe, then if it is still noticeable then have her in under warranty ;-)