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      05-25-2016, 04:10 PM   #17
Cortes2141
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Drives: 2007 z4M
Join Date: Dec 2013
Location: United States

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Quote:
Originally Posted by pokeybritches View Post
There will be some initial burn off, with white or gray smoke.

There are header install kits available with extended length studs. I forget off the top of my head who sells them... ECS, Turner, or Bimmerworld.
Cool, any idea how long it takes to fully break in the cats? After further investigation on my rattling from the dash, I think its actually coming from directly under the gear shift area. Which makes it sound like its inside the cab. I did also install RE tranny mounts while I was under there, however, everything was torqued down to spec. I'm wondering if its A. heat shield that I bent a little to get to the trans mounts, B. the larger diameter section 1 rattling against the tranny brace every once in a while (kind of doubt it though) or C. the cats themselves are breaking in (after I turn the car off I can hear some popping and crackling coming from the cats)...Anyone have any thoughts or ideas?
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