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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Catless DP



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      07-08-2009, 01:33 PM   #1
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Catless DP

any way to pass NYS emmissions inspection with a catless DP without removing them? Will an o2 sim do it or will that just prevent it from throwing a code?
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      07-08-2009, 02:34 PM   #2
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The O2 sim will just prevent the CEL from appearing but will not reduce emissions from the lack of cats. If NY State does a sniffer test, your car won't pass without cats.
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      07-08-2009, 02:37 PM   #3
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Quote:
Originally Posted by Nick@Jlevi SW View Post
The O2 sim will just prevent the CEL from appearing but will not reduce emissions from the lack of cats. If NY State does a sniffer test, your car won't pass without cats.
NYS only does an obd2 scan....
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      07-08-2009, 03:27 PM   #4
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In that case, you may be able to get away with it. The only issue is they may smell the excess gas if the car is running at idle.
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