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      11-22-2018, 02:13 AM   #13
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Drives: 2008 BMW 135i (E88 N54 6AT)
Join Date: Aug 2016
Location: Sunshine Coast QLD Australia

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Quote:
Originally Posted by NinjaDog View Post
Has anyone been caught by cops/epa with Catless downpipes (N54)? If I leave the midpipe it's still technically catted right?
if you have to do an EPA test, you'll fail.

if you get a thorough roadside inspection, you'll pass because only enthusiasts and mechanics know there should be primary and secondary cats on a N54. ... anyone else is going to see the secondary cats and say "yup, that's catted.".

also, because of the secondary cats, a car with carless downpipes doesn't smell like a car with no cats.
(a straight piped exhaust has a faint fireworks smell)
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