Does deleting secondary cats cause CEL? Can I pass emissions testing?

BimmerNugget · 04-30-2018, 03:40 PM

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?

3002 tii · 04-30-2018, 03:44 PM

No cel, o2 sensors are before secondaries so yes you will pass nys emissions

3002 tii · 04-30-2018, 03:52 PM

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.

BimmerNugget · 04-30-2018, 03:54 PM

Quote:

Originally Posted by 3002 tii

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.

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.

martinm0 · 04-30-2018, 04:07 PM

Quote:

Originally Posted by BimmerNugget

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.

04-30-2018, 03:40 PM	#1
BimmerNugget Crazy Frog 559 Rep 1,215 Posts Drives: L.L.Bean Bootmobile Join Date: Jun 2017 Location: 560 State Street iTrader: (0)	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? __________________ www.youtube.com/watch?v=k85mRPqvMbE
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04-30-2018, 03:44 PM	#2
3002 tii Lieutenant General 2478 Rep 12,687 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (100) Garage List E86 Z4 M [10.00] F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] E85 Z4 M (Retired) [9.41] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.56] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93]	No cel, o2 sensors are before secondaries so yes you will pass nys emissions __________________ Follow for latest mods
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04-30-2018, 03:52 PM	#3
3002 tii Lieutenant General 2478 Rep 12,687 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (100) Garage List E86 Z4 M [10.00] F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] E85 Z4 M (Retired) [9.41] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.56] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93]	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. __________________ Follow for latest mods
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