VRSF downpipe without CEL light coming on

LIVY435IGC · 04-03-2018, 07:42 AM

Quote:

Originally Posted by ocN55

Unfortunately, you got no options besides tuning with flash or JB4.

I heard those dont work either. Not sure you read my post earlier, but i basically installed spacer but forgot to clear codes (young kids, so time to work on car is usually at night after everyones asleep).. Any point in trying again?

ocN55 · 04-03-2018, 10:53 AM

Quote:

Originally Posted by LIVY435IGC

I heard those dont work either. Not sure you read my post earlier, but i basically installed spacer but forgot to clear codes (young kids, so time to work on car is usually at night after everyones asleep).. Any point in trying again?

Clearing the code will never be a true fix sadly... Expect to clear the code every couple hundred miles.

I'm not sure about the JB4 anymore, but I know that flashing will be a solution to the issue.

EDIT: I think JB4 still works for your case. The n55 version of it is still not CARB legal.

LIVY435IGC · 04-03-2018, 11:08 AM

Quote:

Originally Posted by ocN55

Clearing the code will never be a true fix sadly... Expect to clear the code every couple hundred miles.

I'm not sure about the JB4 anymore, but I know that flashing will be a solution to the issue.

EDIT: I think JB4 still works for your case. The n55 version of it is still not CARB legal.

Actually, i dont care about light, just need to pass yearly emissions. I think the catted dp would work on the emissions, but the light would be a problem. Thanks for the info!

LIVY435IGC · 04-05-2018, 11:44 PM

Update
Got under the car again and placed the angled spacer. Tried clearing the cel and no success!

ocN55 · 04-06-2018, 03:29 AM

Quote:

Originally Posted by LIVY435IGC

Update
Got under the car again and placed the angled spacer. Tried clearing the cel and no success!

Like I mentioned... Flashing or JB4 is your only solution. Those N55 O2 sensors are a lot more sensitive.

Also, try asking in the N55 subforum, not B58.

LIVY435IGC · 04-06-2018, 10:39 AM

Quote:

Originally Posted by ocN55

Like I mentioned... Flashing or JB4 is your only solution. Those N55 O2 sensors are a lot more sensitive.

Also, try asking in the N55 subforum, not B58.

Thanks man. I wanted to update so others don't waste their time. I have tried the N55 forum, but apparently 2014 + N55s are more particular with fixing the CEL

Jerich0 · 04-06-2018, 01:21 PM

Quote:

Originally Posted by LIVY435IGC

Thanks man. I wanted to update so others don't waste their time. I have tried the N55 forum, but apparently 2014 + N55s are more particular with fixing the CEL

Get the bigdaddiesgarage one... it worked for my N55. Straight spacer!

LIVY435IGC · 04-06-2018, 04:02 PM

Quote:

Originally Posted by Jerich0

Get the bigdaddiesgarage one... it worked for my N55. Straight spacer!

Hmm, pricey but as long as it works. Thanks for the suggestion! You think it would work my particular year? Straight spacer wont work with my setup

Jerich0 · 04-07-2018, 09:28 AM

Quote:

Originally Posted by LIVY435IGC

Hmm, pricey but as long as it works. Thanks for the suggestion! You think it would work my particular year? Straight spacer wont work with my setup

Last time you cleared the code and how long it took to come back?

LIVY435IGC · 04-07-2018, 12:29 PM

Quote:

Originally Posted by Jerich0

Last time you cleared the code and how long it took to come back?

250 miles on the dot. That was after pulling the neg on the battery

LIVY435IGC · 04-07-2018, 02:51 PM

Quote:

Originally Posted by LIVY435IGC

250 miles on the dot. That was after pulling the neg on the battery

Update
So i drove the car with spacer. Was too tired to take it off. I think i drove about 25 miles and no CEL. Thought i was seeing things (more like not seeing things). Thank God! Checked the fault P0420 is cleared. Looks like the angled spacer did the trick.Thanks for all the great advice!

LIVY435IGC · 04-09-2018, 04:07 PM

Quote:

Originally Posted by LIVY435IGC

Update
So i drove the car with spacer. Was too tired to take it off. I think i drove about 25 miles and no CEL. Thought i was seeing things (more like not seeing things). Thank God! Checked the fault P0420 is cleared. Looks like the angled spacer did the trick.Thanks for all the great advice!

So i drove another 100 miles or so and checked the faults and i got the following:
Pending faults for P013A & P013B. I know this is a result of the angled spacer, but is this bad for the car? Thanks again

LIVY435IGC · 04-09-2018, 08:02 PM

Quote:

Originally Posted by LIVY435IGC

So i drove another 100 miles or so and checked the faults and i got the following:
Pending faults for P013A & P013B. I know this is a result of the angled spacer, but is this bad for the car? Thanks again

Update
CEL came on for P013A. Back to square one again

Antec800 · 04-29-2018, 07:57 AM

I’ve had my carless dp on my 2017 for over 4K miles and still no cel

Hudsonvalley435 · 10-22-2018, 10:10 PM

Any updates on the issue. Im going through the same thing. Thinking about going with the mini-cat to stop the codes

eksigned · 10-26-2018, 12:34 PM

Quote:

Originally Posted by LIVY435IGC

So i drove another 100 miles or so and checked the faults and i got the following:
Pending faults for P013A & P013B. I know this is a result of the angled spacer, but is this bad for the car? Thanks again

if your angled defouler isn't working for you, and it says that it's running too lean...can you maybe use a shorty defouler? or a shorter angled unit? some defoulers also come with a dime size nut that you can adjust the diameter of (drill out the middle to be larger or smaller). this might work for you as well.

your option may just be a tune. however,...does anyone know if the tunes actually turn OFF the o2 sensor (that's a BIG NO)? or does it just auto clear? if it auto clears...doesn't that still pull timing?

kern417 · 10-26-2018, 12:52 PM

Quote:

Originally Posted by eksigned

if your angled defouler isn't working for you, and it says that it's running too lean...can you maybe use a shorty defouler? or a shorter angled unit? some defoulers also come with a dime size nut that you can adjust the diameter of (drill out the middle to be larger or smaller). this might work for you as well.

your option may just be a tune. however,...does anyone know if the tunes actually turn OFF the o2 sensor (that's a BIG NO)? or does it just auto clear? if it auto clears...doesn't that still pull timing?

Usually it just ignores the reading and fools the ECU into thinking it's in a safe zone, so the car can operate based on the tune's parameters properly and still show sensor readiness in case of inspections.

grassy_91 · 10-27-2018, 12:38 AM

Angled o2 spacer worked for me! It’s been about 1500 miles and no problems. Without the spacer I got a cel after just ~250 miles

Antec800 · 11-03-2018, 06:33 PM

15k miles no spacer no cel kinda weird

Pinscher · 01-29-2019, 09:05 PM

Amazon is a rip off for small parts, go aliexpress and get free 15 day delivery.

Just plan a head and delivery time is a non issue.

https://www.aliexpress.com/wholesale...ext=O2+CEL+Fix

B58 · 01-30-2019, 09:35 AM

The only spacer that works for me is the 42 draft design. I have the older model spacer and it never threw a cel on my 2016 GTI and current 2018 340i after i switched from the CG catted to vrsf catless.

It seems to be a newly designed so i cant speak for it since i have the original one: http://www.42draftdesigns.com/o2-sensor-spacer/

ScubaSteve · 01-31-2022, 01:16 PM

I'm confused a little, I have a 2013 335 xdrive which is n55 and have the p0420 code on. I've had a catless dp and jb4 installed for years and no issue or cel of any kind and then the light came on about 1 month ago. I had a bit of a rattle going on and when I finally was able to get under the car I noticed that the exhaust hanger mount in the mid section right after the flex part had snapped off (car is quite low on H&R springs). My first task is to fix the hanger mount so the exhaust is not moving around anymore. I've read that the 0420 code could also be cause by an exhaust leak, and wondering if possibly with the exhaust being slightly lose like that for a while is what is possibly causing the light to come on if indeed there is a small leak somewhere. I don't really have a good garage or place to work on my car anymore, besides taking it to a muffler shop if there is a leak I would assume having it welded would be the best and only option?

04-05-2018, 11:44 PM	#48
LIVY435IGC Private First Class 21 Rep 152 Posts Drives: 2015 435i Gran Coupe Join Date: Dec 2014 Location: Plano, TX iTrader: (0) Garage List 2015 BMW 435ix GC [0.00]	Update Got under the car again and placed the angled spacer. Tried clearing the cel and no success!
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04-29-2018, 07:57 AM	#58
Antec800 Lieutenant 128 Rep 462 Posts Drives: 340i x drive Join Date: Apr 2017 Location: Michigan iTrader: (0)	I’ve had my carless dp on my 2017 for over 4K miles and still no cel
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10-22-2018, 10:10 PM	#59
Hudsonvalley435 2015 435i xdrive- 6spd, cp, dp, fmic, bm3 stage 2 25 Rep 41 Posts Drives: F32 435i X Join Date: Aug 2018 Location: Westchester NY iTrader: (0)	Any updates on the issue. Im going through the same thing. Thinking about going with the mini-cat to stop the codes
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10-27-2018, 12:38 AM	#62
grassy_91 Private First Class 62 Rep 181 Posts Drives: '18 340i Join Date: Dec 2015 Location: 626, SGV California iTrader: (2)	Angled o2 spacer worked for me! It’s been about 1500 miles and no problems. Without the spacer I got a cel after just ~250 miles
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11-03-2018, 06:33 PM	#63
Antec800 Lieutenant 128 Rep 462 Posts Drives: 340i x drive Join Date: Apr 2017 Location: Michigan iTrader: (0)	15k miles no spacer no cel kinda weird
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01-29-2019, 09:05 PM	#64
Pinscher Lieutenant 113 Rep 513 Posts Drives: 2008 335i Join Date: Jan 2018 Location: Vancouver iTrader: (0) Garage List 2008 335i - Stock [0.00] 2007 BMW 328 - 330 ... [0.00]	Amazon is a rip off for small parts, go aliexpress and get free 15 day delivery. Just plan a head and delivery time is a non issue. https://www.aliexpress.com/wholesale...ext=O2+CEL+Fix
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01-30-2019, 09:35 AM	#65
B58 Major 558 Rep 1,457 Posts Drives: 922 Turbo Join Date: May 2018 Location: USA iTrader: (1)	The only spacer that works for me is the 42 draft design. I have the older model spacer and it never threw a cel on my 2016 GTI and current 2018 340i after i switched from the CG catted to vrsf catless. It seems to be a newly designed so i cant speak for it since i have the original one: http://www.42draftdesigns.com/o2-sensor-spacer/ __________________ 2024 X3 M40i 2014 BMW M5
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01-31-2022, 01:16 PM	#66
ScubaSteve Private 10 Rep 85 Posts Drives: 2013 335i xDrive M Sport Join Date: Feb 2015 Location: Calgary, Alberta iTrader: (0)	I'm confused a little, I have a 2013 335 xdrive which is n55 and have the p0420 code on. I've had a catless dp and jb4 installed for years and no issue or cel of any kind and then the light came on about 1 month ago. I had a bit of a rattle going on and when I finally was able to get under the car I noticed that the exhaust hanger mount in the mid section right after the flex part had snapped off (car is quite low on H&R springs). My first task is to fix the hanger mount so the exhaust is not moving around anymore. I've read that the 0420 code could also be cause by an exhaust leak, and wondering if possibly with the exhaust being slightly lose like that for a while is what is possibly causing the light to come on if indeed there is a small leak somewhere. I don't really have a good garage or place to work on my car anymore, besides taking it to a muffler shop if there is a leak I would assume having it welded would be the best and only option?
	Appreciate 0 Quote