Illinois emissions pass with primary cat delete?

zcp312 · 10-22-2021, 04:24 PM

Had the car for a year and have my first emissions coming up by January, wondering if I'll pass. I have a test pipe (primary cat delete) and exhaust. Also have Alex's Alpine stage 2 tune, so no check engine light on or anything due to his software clearing those. Anyone have this type of setup that can let me know if I'll pass emissions?

zcp312 · 11-11-2021, 02:51 PM

bump

randrews15 · 11-11-2021, 05:27 PM

You could move south to a state that doesn't have nanny state restrictions. Just saying…

zcp312 · 11-12-2021, 12:53 PM

although I 100% agree, this doesn't help me

ghostofsenna · 11-12-2021, 01:23 PM

I didn't know we were required to have emissions tests. Can you elaborate?

pjk380 · 11-12-2021, 01:34 PM

Does Illinois check the readiness monitors? If they do, O2 readiness will not set without primary cats. If you are allowed to have one monitor not set in order to pass you should be good. Here in CA i think you can pass with one monitor not set but it cant be the O2. If your state doesnt check for Readiness, and only checks for faults/CEL, and doesnt look under the car you should probably be good.

zcp312 · 11-12-2021, 02:05 PM

Quote:

Originally Posted by ghostofsenna

I didn't know we were required to have emissions tests. Can you elaborate?

yea every two years, here is some info.

https://www2.illinois.gov/epa/topics...s-testing.aspx

Quote:

Originally Posted by pjk380

Does Illinois check the readiness monitors? If they do, O2 readiness will not set without primary cats. If you are allowed to have one monitor not set in order to pass you should be good. Here in CA i think you can pass with one monitor not set but it cant be the O2. If your state doesnt check for Readiness, and only checks for faults/CEL, and doesnt look under the car you should probably be good.

not sure, I'll try to research that. thanks for the info, this is all I found so far

https://www2.illinois.gov/epa/topics...rk%20FINAL.pdf

z3papa · 11-24-2021, 10:33 AM

To be clear, this only applies to Chicago and Metro East and not the entire state.

Spazdoc · 06-15-2022, 10:41 PM

Quote:

Originally Posted by zcp312

Had the car for a year and have my first emissions coming up by January, wondering if I'll pass. I have a test pipe (primary cat delete) and exhaust. Also have Alex's Alpine stage 2 tune, so no check engine light on or anything due to his software clearing those. Anyone have this type of setup that can let me know if I'll pass emissions?

What did you end up doing?

10-22-2021, 04:24 PM	#1
zcp312 ///M 93 Rep 250 Posts Drives: 2011 E90 M3 ZCP Join Date: Oct 2020 Location: Illinois iTrader: (0)	Had the car for a year and have my first emissions coming up by January, wondering if I'll pass. I have a test pipe (primary cat delete) and exhaust. Also have Alex's Alpine stage 2 tune, so no check engine light on or anything due to his software clearing those. Anyone have this type of setup that can let me know if I'll pass emissions?
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11-11-2021, 02:51 PM	#2
zcp312 ///M 93 Rep 250 Posts Drives: 2011 E90 M3 ZCP Join Date: Oct 2020 Location: Illinois iTrader: (0)	bump
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11-11-2021, 05:27 PM	#3
randrews15 Lieutenant 284 Rep 552 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	You could move south to a state that doesn't have nanny state restrictions. Just saying…
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11-12-2021, 12:53 PM	#4
zcp312 ///M 93 Rep 250 Posts Drives: 2011 E90 M3 ZCP Join Date: Oct 2020 Location: Illinois iTrader: (0)	although I 100% agree, this doesn't help me
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11-12-2021, 01:23 PM	#5
ghostofsenna First Lieutenant 130 Rep 364 Posts Drives: E90 M3, E93 M3, E91 328xi, S4 Join Date: Nov 2014 Location: Illinois iTrader: (2)	I didn't know we were required to have emissions tests. Can you elaborate? __________________ 2011.75 E90 M3 ZCP, 6sp, Interlagos Blue 2008 E93 M3, DCT, Melbourne Red 2007 E91 328xi Touring Wagon, Jet Black 2007 Audi B7 S4, 6sp, Sprint Blue Sold: E70 X5M, E46 M3 6sp cabriolet, E46 M3 SMG
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11-12-2021, 01:34 PM	#6
pjk380 Private First Class 88 Rep 163 Posts Drives: 2010 E92 M3 Join Date: Feb 2016 Location: Yorba Linda, CA iTrader: (0)	Does Illinois check the readiness monitors? If they do, O2 readiness will not set without primary cats. If you are allowed to have one monitor not set in order to pass you should be good. Here in CA i think you can pass with one monitor not set but it cant be the O2. If your state doesnt check for Readiness, and only checks for faults/CEL, and doesnt look under the car you should probably be good.
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11-24-2021, 10:33 AM	#8
z3papa Captain 190 Rep 969 Posts Drives: 11 E92 M3 ZCP, 07 335i Join Date: Oct 2009 Location: Bloomington IL iTrader: (2)	To be clear, this only applies to Chicago and Metro East and not the entire state. __________________ Sold 2011.5 E92 M3 ZCP.
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