JB4 O2 Simulation Question - BMW 3-Series (E90 E92) Forum

gregnm369 · 11-28-2012, 01:06 AM

Ok, so I live in GA which is an emission controlled state and have a JB4 I'm about to install. I read that on map 0, OBD2 works. If I am on map 0, does O2 simulation still work?

This will determine if I go with a catless downpipe.

Lankster · 11-28-2012, 01:25 AM

Interested in the answer. subscribed

drm916 · 11-28-2012, 10:43 AM

Quote:

Originally Posted by gregnm369

Ok, so I live in GA which is an emission controlled state and have a JB4 I'm about to install. I read that on map 0, OBD2 works. If I am on map 0, does O2 simulation still work?

This will determine if I go with a catless downpipe.

I am in GA too. I just run the BMS downpipe fix and my car throws/shows no codes on cattless DPs.

Set the car to map 0 and go to emisions. If your catless then you need DP fix. If you have cats then you dont need the DP fix.

gregnm369 · 11-28-2012, 07:27 PM

Quote:

Originally Posted by drm916

I am in GA too. I just run the BMS downpipe fix and my car throws/shows no codes on cattless DPs.

Set the car to map 0 and go to emisions. If your catless then you need DP fix. If you have cats then you dont need the DP fix.

That's what I needed to know. Thanks!

CUTigers · 11-28-2012, 08:30 PM

I thought the DP fix just stops the check engine light? I thought you would still fail emissions?

I don't know, just what I understood. Could be wrong

stilov · 11-28-2012, 08:59 PM

The built in feature on the JB4 will NOT pass emissions...it constantly gets a "not ready" status.
The external DPfix actually simulates a working o2 sensor and will allow a "ready" status needed in order to pass.

keendog42 · 11-28-2012, 09:01 PM

NJ only plugs into OBDII and does not actually do the sniff test so GA may be different but the DPfix works like a charm in NJ.

CUTigers · 11-28-2012, 09:22 PM

Quote:

Originally Posted by keendog42

NJ only plugs into OBDII and does not actually do the sniff test so GA may be different but the DPfix works like a charm in NJ.

Here in GA they just plug in... So sounds like just get the DP fix and be good to go.

stilov · 11-28-2012, 09:27 PM

Same here, just plug it in. Technically, if they look under the car I guess they could fail you, but they never do.

keendog42 · 11-28-2012, 09:38 PM

When they look under the car; the secondary cats are still there so no issues.

stilov · 11-28-2012, 09:45 PM

oh...mine aren't

forgot about those

luv135i · 11-28-2012, 09:47 PM

Yall need to live in middle ga like me. We dont care about the enviroment. No emissions for us, just you atl guys

CUTigers · 11-28-2012, 10:31 PM

Good luck on them trying to get under my car and see the cats on my DPs lol.... I used to have my car registered outside of Atl, but not anymore :-(

gregnm369 · 11-29-2012, 12:13 AM

JB4 just went on... Now to pick out the downpipes lol

drm916 · 11-29-2012, 12:47 PM

Quote:

Originally Posted by gregnm369

JB4 just went on... Now to pick out the downpipes lol

Grab the BMS if you are going catless. They have great price and fitment. From same place as your JB4 and DP fix.

I put them on myself. Not too bad.

ANd yea no way to get under my car either. Its only about 3 inches off the ground. The emissions place will just plug into OBD2 port here in GA.

dlr944 · 12-03-2012, 12:17 AM

If you have v5 board do you still need external fix?

11-28-2012, 01:06 AM	#1
gregnm369 THE MFM Drives: 08 E93 335i Join Date: Nov 2012 Location: Atlanta, GA Posts: 47 iTrader: (1)	JB4 O2 Simulation Question Ok, so I live in GA which is an emission controlled state and have a JB4 I'm about to install. I read that on map 0, OBD2 works. If I am on map 0, does O2 simulation still work? This will determine if I go with a catless downpipe. __________________ 2008 Space Gray E93 335i - JB4 G5 \| BMS DCI
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11-28-2012, 01:25 AM	#2
Lankster Sigma Alpha Epsilon Drives: 2007 335xi Join Date: Apr 2012 Location: Encinitas Posts: 341 iTrader: (0)	Interested in the answer. subscribed __________________ Forum Bible http://www.albinoblacksheep.com/flash/posting JB4, BMS DCI, Dimisa 4" tips, VMR 710 Matt Black, Plasti-Dip Mod

11-28-2012, 09:47 PM	#12
luv135i Captain Drives: White Join Date: Nov 2009 Location: GA Posts: 754 iTrader: (0) Garage List 2005 Suzuki Hayabusa [0.50] 1994 Honda Del Sol [0.50] 2004 Cadillac CTS [0.50] 2011 BMW 328I [1.50] 2010 BMW 135I [2.75]	Yall need to live in middle ga like me. We dont care about the enviroment. No emissions for us, just you atl guys __________________ 2010 135i AW 2011 328i AW

11-29-2012, 12:13 AM	#14
gregnm369 THE MFM Drives: 08 E93 335i Join Date: Nov 2012 Location: Atlanta, GA Posts: 47 iTrader: (1)	JB4 just went on... Now to pick out the downpipes lol __________________ 2008 Space Gray E93 335i - JB4 G5 \| BMS DCI

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11-28-2012, 08:30 PM	#5
CUTigers Captain Drives: 2008 Montego Blue 335i Join Date: Mar 2012 Location: Atlanta/Lawrenceville Posts: 842 iTrader: (0) Garage List 2008 Lexus IS F [5.00] 2008 e90 335i [4.50]	I thought the DP fix just stops the check engine light? I thought you would still fail emissions? I don't know, just what I understood. Could be wrong

11-28-2012, 08:59 PM	#6
stilov Lieutenant Drives: 07 335i Join Date: Mar 2009 Location: Allen, TX Posts: 410 iTrader: (2)	The built in feature on the JB4 will NOT pass emissions...it constantly gets a "not ready" status. The external DPfix actually simulates a working o2 sensor and will allow a "ready" status needed in order to pass.

11-28-2012, 09:01 PM	#7
keendog42 New Member Drives: 335i Join Date: Dec 2011 Location: NJ Posts: 23 iTrader: (1)	NJ only plugs into OBDII and does not actually do the sniff test so GA may be different but the DPfix works like a charm in NJ.

11-28-2012, 09:27 PM	#9
stilov Lieutenant Drives: 07 335i Join Date: Mar 2009 Location: Allen, TX Posts: 410 iTrader: (2)	Same here, just plug it in. Technically, if they look under the car I guess they could fail you, but they never do.

11-28-2012, 09:38 PM	#10
keendog42 New Member Drives: 335i Join Date: Dec 2011 Location: NJ Posts: 23 iTrader: (1)	When they look under the car; the secondary cats are still there so no issues.

11-28-2012, 09:45 PM	#11
stilov Lieutenant Drives: 07 335i Join Date: Mar 2009 Location: Allen, TX Posts: 410 iTrader: (2)	oh...mine aren't forgot about those

11-28-2012, 10:31 PM	#13
CUTigers Captain Drives: 2008 Montego Blue 335i Join Date: Mar 2012 Location: Atlanta/Lawrenceville Posts: 842 iTrader: (0) Garage List 2008 Lexus IS F [5.00] 2008 e90 335i [4.50]	Good luck on them trying to get under my car and see the cats on my DPs lol.... I used to have my car registered outside of Atl, but not anymore :-(

12-03-2012, 12:17 AM	#16
dlr944 New Member Drives: 335i Coupe Join Date: Aug 2010 Location: Austin Posts: 9 iTrader: (0)	If you have v5 board do you still need external fix?