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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Does deleting secondary cats cause CEL? Can I pass emissions testing?



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      04-30-2018, 03:40 PM   #1
BimmerNugget
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Does deleting secondary cats cause CEL? Can I pass emissions testing?

I have a LCI 328i. Currently has a rogue ikon axle back exhaust on it. Sounds great but i'm looking for a little more growl and noise but not too ricey.

I was gonna delete the resonator but the shop wanted $222 so I told them to piss off. Also alot of people on here seem to say resonator delete causes droning. So now i'm looking into doing a secondary cat delete.

Does secondary cat delete cause a CEL? Can I pass NYS OBD2 emissions testing?
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      04-30-2018, 03:44 PM   #2
3002 tii
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No cel, o2 sensors are before secondaries so yes you will pass nys emissions
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      04-30-2018, 03:52 PM   #3
3002 tii
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FYi side note but your 328i has SULEV warranty which is honored in tri-state (along with few other). Not sure if that’s valuable to you or not but I could see a dealer giving you a hard time if you ever wanted to make a claim and your secondaries were deleted.

I just got some free work done few months ago which was pretty nice considering it’s mileage.
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      04-30-2018, 03:54 PM   #4
BimmerNugget
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Quote:
Originally Posted by 3002 tii View Post
FYi side note but your 328i has SULEV warranty which is honored in tri-state (along with few other). Not sure if thatís valuable to you or not but I could see a dealer giving you a hard time if you ever wanted to make a claim and your secondaries were deleted.

I just got some free work done few months ago which was pretty nice considering itís mileage.
Damn, I totally forgot about that aspect. I do have the N51 so I have the SULEV warranty. Just waiting for my VCG to leak to take advantage of the warranty.
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      04-30-2018, 04:07 PM   #5
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Quote:
Originally Posted by BimmerNugget View Post
Damn, I totally forgot about that aspect. I do have the N51 so I have the SULEV warranty. Just waiting for my VCG to leak to take advantage of the warranty.
Me too! But I really want MILVs. I may skip this one on the SULEV warranty and do it myself.
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