VRSF downpipe without CEL light coming on

jacksonite · 10-05-2017, 11:56 PM

I currently have a b58 440i coupe MT with full akra exhaust, BMS intake, and DINAN tronic sport tuner. I am planning on installing a VRSF catless downpipe but i want to know if anyone has done it without the CEL light coming on. I know the JB4 can clear this but i want to avoid that if at all possible. Any ideas?

Antec800 · 10-06-2017, 12:09 AM

Newest jb4 firmware in the us and possibly Canada can not clear anymore, and eventually you will throw a cel not a big deal get a code reader and delete it

jacksonite · 10-06-2017, 12:38 AM

Main concern is i do not want to take it in for service at the dealer with a CEL on it.

Chicken_Joe · 10-06-2017, 06:07 AM

Quote:

Originally Posted by jacksonite

Main concern is i do not want to take it in for service at the dealer with a CEL on it.

Get an O2 spacer

Roki187 · 10-06-2017, 06:18 AM

Quote:

Originally Posted by Chicken_Joe

Get an O2 spacer

I’m baffled that people still don’t know about this, Ive been using the extensions for a quite a while now with 100% results on every car I’ve owned

Chicken_Joe · 10-06-2017, 10:43 AM

Quote:

Originally Posted by Roki187

Quote:

Originally Posted by Chicken_Joe

Get an O2 spacer

I’m baffled that people still don’t know about this, Ive been using the extensions for a quite a while now with 100% results on every car I’ve owned

It?s actually really funny

salvs22 · 01-10-2018, 09:12 PM

Quote:

Originally Posted by Roki187

I’m baffled that people still don’t know about this, Ive been using the extensions for a quite a while now with 100% results on every car I’ve owned

Would you mind sharing the link to the o2 spacer you're using? My VRSF downpipe should be arriving in the mail next week and I'd like to get a spacer put on with the downpipe

Antec800 · 01-13-2018, 06:52 PM

I’ve had the downpipe on my car over 5k miles still no cel

sspade · 01-13-2018, 08:03 PM

Anyone have a link to a spacer known to work? Where exactly in the exhaust path is an O2 spacer necessary to avoid CEL with a catless downpipe?

SLVRsurfr_32 · 01-13-2018, 08:43 PM

Quote:

Originally Posted by sspade

Anyone have a link to a spacer known to work? Where exactly in the exhaust path is an O2 spacer necessary to avoid CEL with a catless downpipe?

Just check Amazon, plenty of choices in there.

sspade · 01-13-2018, 08:59 PM

So basically... what we are saying is that these are generic and one size fits all type thing?

A 5$ works as good as a $20 one? Honestly not sure, thats why Im asking.

paimon.soror · 01-13-2018, 09:04 PM

Quote:

Originally Posted by sspade

So basically... what we are saying is that these are generic and one size fits all type thing?

A 5$ works as good as a $20 one? Honestly not sure, thats why Im asking.

https://www.amazon.com/Vibrant-11619.../dp/B00AQ7972O

little bit on the 'expensive' side, but you will have adjustment options. Popular on the 911 forums and VW forums. Seems that the middle fitting is the one the general concensus goes with.

I have one sitting in my basement right now on an ER downpipe ... just haven't installed it because i dont have a tune. quality piece.

wassy4 · 01-14-2018, 12:25 AM

Get an O2 spacer. Just get a straight one. I made the mistake of buying an angled one that was too big and took the O2 sensor completely out of the exhaust stream.

yoon_209 · 01-19-2018, 06:16 PM

I have a n55 with vrsf catless dp and jb4.

There is no possible way to have catless dp and have no codes unless you have an o2 sim

I took my car for the 30k inspection at the and cleared the code before I took it to the dealer. For some reason, the tech or the SA never mentioned anything about my mods and codes. Even when they showed me the fat stack of papers from the system diagnostic and nothing regarding my dp and mods or any codes even showed up

LIVY435IGC · 01-22-2018, 10:24 AM

So can someone clear this up for me?
I have a ER catted dp on my 2015 f36, N55.
The CEL has come on and now there is a P0420 code.
I have heard that the VRSF DP fix will not work on my car and will not remove the cel and have the car emission ready for a smog test.
Would the O2 spacer eliminate the CEL and allow the car to pass inspection?
I am not looking forward to taking the dp and putting back the oem annually for the car inspection.
Thanks!

wassy4 · 01-22-2018, 10:51 AM

Quote:

Originally Posted by LIVY435IGC

So can someone clear this up for me?
I have a ER catted dp on my 2015 f36, N55.
The CEL has come on and now there is a P0420 code.
I have heard that the VRSF DP fix will not work on my car and will not remove the cel and have the car emission ready for a smog test.
Would the O2 spacer eliminate the CEL and allow the car to pass inspection?
I am not looking forward to taking the dp and putting back the oem annually for the car inspection.
Thanks!

O2 spacer will work but it might take a couple different ones to get it right. Just get one of the straight ones. Don't make the mistake I did and get a really long angled one, it takes the O2 sensor too far out of the exhaust flow.

LIVY435IGC · 01-22-2018, 11:21 AM

Quote:

Originally Posted by wassy4

O2 spacer will work but it might take a couple different ones to get it right. Just get one of the straight ones. Don't make the mistake I did and get a really long angled one, it takes the O2 sensor too far out of the exhaust flow.

You are a lifesaver my friend! Finally a promising sense of relief!
Which one did you end up using. Can you send a link?
I was so not looking to doing the swap annually

wassy4 · 01-22-2018, 11:24 AM

Quote:

Originally Posted by LIVY435IGC

Quote:

Originally Posted by wassy4

O2 spacer will work but it might take a couple different ones to get it right. Just get one of the straight ones. Don't make the mistake I did and get a really long angled one, it takes the O2 sensor too far out of the exhaust flow.

You are a lifesaver my friend! Finally a promising sense of relief!
Which one did you end up using. Can you send a link?
I was so not looking to doing the swap annually

The one I used didn't work cause it's angled. Just go on ebay or amazon and look it up for top rated. They're pretty cheap.

Alternatively, you can go into any auto parts store and look for a spark flog de-fouler/non-fouler which are like $5 bucks. If you buy 2 and stack them it will work as well but you might have to drill one of them out to fit the sensor.

LIVY435IGC · 01-22-2018, 11:31 AM

Quote:

Originally Posted by wassy4

The one I used didn't work cause it's angled. Just go on ebay or amazon and look it up for top rated. They're pretty cheap.

Alternatively, you can go into any auto parts store and look for a spark flog de-fouler/non-fouler which are like $5 bucks. If you buy 2 and stack them it will work as well but you might have to drill one of them out to fit the sensor.

Awesome, thank you so much.
I will give it a try this weekend. Did you have to take your dp to put this on or where you able to just replace with it on the car? My car is xdrive and space is tight..

wassy4 · 01-22-2018, 11:33 AM

Quote:

Originally Posted by LIVY435IGC

Quote:

Originally Posted by wassy4

The one I used didn't work cause it's angled. Just go on ebay or amazon and look it up for top rated. They're pretty cheap.

Alternatively, you can go into any auto parts store and look for a spark flog de-fouler/non-fouler which are like $5 bucks. If you buy 2 and stack them it will work as well but you might have to drill one of them out to fit the sensor.

Awesome, thank you so much.
I will give it a try this weekend. Did you have to take your dp to put this on or where you able to just replace with it on the car? My car is xdrive and space is tight..

Should be able to put it on without taking it off. Just pull the sensor off (make sure it's post cat and not pre cat), stick the spacer in, then plug the sensor into the spacer. I'd recommend putting some anti seize on the spacer so that it will come off easy whenever you're done with it.

LIVY435IGC · 01-22-2018, 01:12 PM

Quote:

Originally Posted by wassy4

Should be able to put it on without taking it off. Just pull the sensor off (make sure it's post cat and not pre cat), stick the spacer in, then plug the sensor into the spacer. I'd recommend putting some anti seize on the spacer so that it will come off easy whenever you're done with it.

Thanks man. I was wondering which sensor it was. Now i know to go after the cat.
So with your comment about putting anti sieze. Is this something you do just to pass inspection or do you have the spacer on all the time?

wassy4 · 01-22-2018, 11:58 PM

Quote:

Originally Posted by LIVY435IGC

Quote:

Originally Posted by wassy4

Should be able to put it on without taking it off. Just pull the sensor off (make sure it's post cat and not pre cat), stick the spacer in, then plug the sensor into the spacer. I'd recommend putting some anti seize on the spacer so that it will come off easy whenever you're done with it.

Thanks man. I was wondering which sensor it was. Now i know to go after the cat.
So with your comment about putting anti sieze. Is this something you do just to pass inspection or do you have the spacer on all the time?

On all of the time unless you wanna deal with the CEL

10-05-2017, 11:56 PM	#1
jacksonite Private 27 Rep 91 Posts Drives: 440i coupe MT Join Date: Oct 2011 Location: Los Angeles iTrader: (0)	VRSF downpipe without CEL light coming on I currently have a b58 440i coupe MT with full akra exhaust, BMS intake, and DINAN tronic sport tuner. I am planning on installing a VRSF catless downpipe but i want to know if anyone has done it without the CEL light coming on. I know the JB4 can clear this but i want to avoid that if at all possible. Any ideas?
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10-06-2017, 12:09 AM	#2
Antec800 Lieutenant 128 Rep 462 Posts Drives: 340i x drive Join Date: Apr 2017 Location: Michigan iTrader: (0)	Newest jb4 firmware in the us and possibly Canada can not clear anymore, and eventually you will throw a cel not a big deal get a code reader and delete it
	Appreciate 0 Quote

10-06-2017, 12:38 AM	#3
jacksonite Private 27 Rep 91 Posts Drives: 440i coupe MT Join Date: Oct 2011 Location: Los Angeles iTrader: (0)	Main concern is i do not want to take it in for service at the dealer with a CEL on it.
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01-13-2018, 06:52 PM	#8
Antec800 Lieutenant 128 Rep 462 Posts Drives: 340i x drive Join Date: Apr 2017 Location: Michigan iTrader: (0)	I’ve had the downpipe on my car over 5k miles still no cel
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01-13-2018, 08:03 PM	#9
sspade Major General 2465 Rep 5,457 Posts Drives: F30 Join Date: Oct 2017 Location: Stevenson, WA iTrader: (3) Garage List 2016 BMW 320i [7.87] 2014 BMW 328i [6.83]	Anyone have a link to a spacer known to work? Where exactly in the exhaust path is an O2 spacer necessary to avoid CEL with a catless downpipe?
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01-13-2018, 08:59 PM	#11
sspade Major General 2465 Rep 5,457 Posts Drives: F30 Join Date: Oct 2017 Location: Stevenson, WA iTrader: (3) Garage List 2016 BMW 320i [7.87] 2014 BMW 328i [6.83]	So basically... what we are saying is that these are generic and one size fits all type thing? A 5$ works as good as a $20 one? Honestly not sure, thats why Im asking.
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01-14-2018, 12:25 AM	#13
wassy4 Second Lieutenant 98 Rep 235 Posts Drives: 2016 340i Join Date: Feb 2017 Location: Orlando iTrader: (0)	Get an O2 spacer. Just get a straight one. I made the mistake of buying an angled one that was too big and took the O2 sensor completely out of the exhaust stream. __________________ Current - 2018 M2 \| VRSF Chargepipe \| VRSF Catless Downpipe \| Dinan Catback \| Turner Motorsports Intake Previous - 2016 340i M-Sport \| AWE Tuning Touring Edition Exhaust w/ Non-Resonated Performance Mid Pipe \| Agency Power Intake \| Active Autowerke Activ-8 \| VRSF Catless Downpipe
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01-19-2018, 06:16 PM	#14
yoon_209 Masterchief 362 Rep 1,010 Posts Drives: 20' BMW M340i Join Date: Aug 2016 Location: Irvine, CA iTrader: (1)	I have a n55 with vrsf catless dp and jb4. There is no possible way to have catless dp and have no codes unless you have an o2 sim I took my car for the 30k inspection at the and cleared the code before I took it to the dealer. For some reason, the tech or the SA never mentioned anything about my mods and codes. Even when they showed me the fat stack of papers from the system diagnostic and nothing regarding my dp and mods or any codes even showed up __________________ AWE Non-Res Touring \| TE37 SL PW \| Ohlins RT
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01-22-2018, 10:24 AM	#15
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]	So can someone clear this up for me? I have a ER catted dp on my 2015 f36, N55. The CEL has come on and now there is a P0420 code. I have heard that the VRSF DP fix will not work on my car and will not remove the cel and have the car emission ready for a smog test. Would the O2 spacer eliminate the CEL and allow the car to pass inspection? I am not looking forward to taking the dp and putting back the oem annually for the car inspection. Thanks!
	Appreciate 0 Quote