Thread: n51 engines
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      02-05-2013, 06:54 PM   #5
Eagle1oh7
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Drives: '11 328i Sedan
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Quote:
Originally Posted by jc5988 View Post
3-5 for PE, about 10 for both main and secandary cats removal.

PE wont cause any problem.

the cat will cause issue when u need smog exam done, also you need get a tune to get the setting right.

bonus part for N51, all emission related parts are covered by factory for i think 100k miles/10year N51 only special warranty.
Good to know! I didn't know this, where did you get that little detail?
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