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      01-17-2013, 03:39 PM   #11
Antipathy
d00sh
 
Drives: 335i
Join Date: Aug 2012
Location: nova

Posts: 52
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Quote:
Originally Posted by DarkNemesis View Post
Would love to hear from others?
Not sure if this only applies to n54s only.
DN
All direct-injection engines experience some sort of buildup. If a 335 has an owner who never goes to redline, the cats and intake ports are probably caked with gunk, a sad sight indeed.
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