01-07-2019, 01:12 PM | #1 |
Back4Revenge
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S/C'd in Illinois Cant Pass Emissions.....
Quick question everyone, is this a complete tune problem, hardware, or collision of both?
Illinois (Schaumburg/Chicago) No Sniffer/Visual test just OBD code checking I can't pass. 3 Will appear not ready Catalyst: Incomplete Evaporative System: Incomplete Oxygen Sensor: Incomplete Word has it the V6 is a real b*tch to cycle lol. I replaced the Sensor and it activated the 'Oxygen Sensor Heater' so I got 25% in progression. I may have some exhaust leaks. other than that the hardware is smooth : Long tube headers / with hi flow cats all sensors in. I did get a p0420 Catalyst System Efficiency below threshold Any help would be FANTASTIC, because apparently I'm the only Supercharged 6 near chicago all these performance shops around here don't know anything for the 6.
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01-07-2019, 01:48 PM | #2 |
Drives: 2011 2ss/rs, 1990 iroc-z Join Date: Jul 2011
Location: Ottawa Ontario
Posts: 197
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evap will complete when u deal with other 2 codes.
You will have to complete the chevy drive test. How to Perform a Basic Drive Cycle Here are step-by-step instructions on how to perform a basic, yet very effective, drive cycle that will complete the readiness monitors for your vehicle's emissions control system. Step One: How to Prepare Your Vehicle
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01-07-2019, 02:12 PM | #3 |
Drives: 2010 Camaro 454 LSX (SOLD) Join Date: Jun 2013
Location: Dearborn Heights, MI
Posts: 792
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Hey I think the main issue is your long tube headers. Whenever you change your exhaust it will fail your emissions test. Even if all your o2 sensors are in. Nothing to do with supercharger only exhaust. Even with high flow cats it will be to rich. If you have any other questions let me thank you
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01-08-2019, 03:27 PM | #4 |
Drives: 2015 2SS White Convertible CE/INDY Join Date: Mar 2016
Location: Lockport, IL
Posts: 780
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You will need a tune with LTH. They have O2 extenders that some have had success with, are you using those?
joe...
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01-12-2019, 09:47 PM | #5 |
Back4Revenge
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Update:
Went to the Exhaust shop had him weld any leaks, after replacing the downstream passenger sensor. EVAP: Not Ready Catalyst: Not Ready Oxygen Sensor: Ready Oxygen Heater: Ready Progress. No CEL. Performed all the cycle instructions, multiple times. This past week. After Performing the driving cycles, I need at least one of those to ready up in order for me to pass over here. If I read that right.. The EVAP will only complete if the catalyst completes.. Which means that If I complete the catalyst ready monitor, we'll be all good to go. Also meaning that the EVAP code will not ready up at all then. So the Problem has been narrowed down to: Solve Catalyst Ready Up Monitor or No Deal? If not how can I ready up the EVAP alone? The LT headers I have, were taken into account when HPtuners/Overkill Motorsports Tuned it, with the cheap hi flow cats that I have. Im not sure about the 02 extenders, the 4 sensors that I have all fti without using the wire extension that i believe you're referring to? So with all that being said.. What should be the next step?
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01-12-2019, 09:52 PM | #6 |
Back4Revenge
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Mind you I continue to check with the HPtuners Pro Kit, on all monitors and CELs
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01-14-2019, 12:28 PM | #7 |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
Posts: 1,741
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Can you get different cats?
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01-14-2019, 01:15 PM | #8 |
Drives: 2015 2SS White Convertible CE/INDY Join Date: Mar 2016
Location: Lockport, IL
Posts: 780
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I have no further ideas and hope you get a resolution to this.
joe...
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01-14-2019, 02:04 PM | #9 |
Back4Revenge
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All assistance is appreciated fellas,
If I can ready up this EVAP monitor, I will be golden. Otherwise I need to figure out how to Ready up the Catalyst Monitor
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I chose my 6 with Pride..
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01-26-2019, 08:12 PM | #10 |
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The O2 extenders mentioned in a previous post isn't referring to wire extenders. These O2 extenders are metal spacers that are screwed into the rear O2 bung first, and then the O2 sensor is screwed into the the extender.
O2 Extenders |
01-29-2019, 03:18 PM | #11 |
Drives: 2012 Camaro RS 2LT 6spd man Join Date: Aug 2013
Location: Dickinson, Texas
Posts: 535
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sounds like you just need to drive it a few more times. Mine did the same thing. all 4 of the above the same. I took mine to chevy to make sure something else may be wrong, it just needs a few more cycles to reset. They stated this vehicle is not the easiest to cycle to ready for the parameters listed. My successful run was when I filled witl super and drove 30-60 miles under 50 mph. did drive hard, just drove it easy. kept the rpms under 3k. Then it reset to ready...weird how that works.
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01-29-2019, 03:23 PM | #12 |
Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012
Location: Southeast, PA
Posts: 2,084
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If you change your P0420 code in the tune to "No Error Reporting" will that ready you up?
With the long tubes and high-flows, you're probably throwing that code even though your cats are working. If they don't sniff, and it's just that code stopping you, you should be fine after that. I'm surprised Will kept the P0420 code in the tune, all through the w-body world when we switched out our downpipes with high-flows we shut that code off.
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03-03-2019, 05:28 PM | #13 |
Drives: 2018 Camaro 2SS, Hyper Blue Join Date: Jun 2016
Location: Next Level Tuning - Chicago
Posts: 186
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You ever get it to pass emissions? We have cars that go through with headers, no cats, cam, s/c, no issues. I'm in Illinois
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03-08-2019, 08:30 PM | #14 |
Back4Revenge
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I found out how and finally passed!
Everyone that said they had no issues were V8 users and not the V6ers I tweaked the tune and added the mini cats and BOOM
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