help obd emissions test

mexicobmw · 08-15-2016, 01:47 PM

Hello I wanetd to ask you for some help.

I live in mexico city and currently have a 2012 1m.

I have the following mods:

Cobb Fmic
Cobb charge pipe
Cobb catted downpipes
Cobb accesport V3 with custome PTF stage 2 tune
Maddad midpipes
Akra rear section

In the recent months the city has now established emission inspections via OBD port.

I have read several therads on the n54 emissions tests etc and how to pass them but im not 100% clear and thus wanted to ask for some help or pointers.

To try and get ready for the inspection so far I have scanned my car with the cobb accesport (had a couple of codes and cleared them), then I proceded to buy an autozone obd car doctor device to scan the car. To my surprise it threw this two codes . P0420 P0430, I have read both this codes are associated with catless donpipes. (mine are catted) .

To be sure I am doing things correct. I now need to flash my car back to stock tune, then erase all codes and proced to record a drive cycle.

myq uestiosn are:

1.-How do I knowo the drive cycle is completed?

2.-The codes I have now P0420 P0430 can be due to the car currently not having recorded the drive cycle? or with the stock tune they should go away?

3.-Do I need to buy and install a DP fix even though my downpieps are catted?

Again thank you for your help

regards

diego garcia

csu87 · 08-15-2016, 03:31 PM

how the hell is mexico trying to regulate emissions?

I havent seen 1 car down there that would pass

zinner · 08-15-2016, 05:36 PM

There is a readiness test that will be marked as completed that is read over the obd2 port. Your aftermarket cobb catted pipes probably aren't effective enough to allow that test to complete successful hence the power train codes you listed.

Even if you disable the codes the emission check will never complete (at least in my experience). Probably will need to put the stock cats back on or look for another aftermarket option that is more effective.

mexicobmw · 08-16-2016, 08:34 AM

Thanks for the help, and I do agree this tests in the city are necessary the air quality sucks .

Regards

Diego

08-15-2016, 01:47 PM	#1
mexicobmw First Lieutenant 56 Rep 381 Posts Drives: car Join Date: Sep 2008 Location: mexico city iTrader: (0)	help obd emissions test Hello I wanetd to ask you for some help. I live in mexico city and currently have a 2012 1m. I have the following mods: Cobb Fmic Cobb charge pipe Cobb catted downpipes Cobb accesport V3 with custome PTF stage 2 tune Maddad midpipes Akra rear section In the recent months the city has now established emission inspections via OBD port. I have read several therads on the n54 emissions tests etc and how to pass them but im not 100% clear and thus wanted to ask for some help or pointers. To try and get ready for the inspection so far I have scanned my car with the cobb accesport (had a couple of codes and cleared them), then I proceded to buy an autozone obd car doctor device to scan the car. To my surprise it threw this two codes . P0420 P0430, I have read both this codes are associated with catless donpipes. (mine are catted) . To be sure I am doing things correct. I now need to flash my car back to stock tune, then erase all codes and proced to record a drive cycle. myq uestiosn are: 1.-How do I knowo the drive cycle is completed? 2.-The codes I have now P0420 P0430 can be due to the car currently not having recorded the drive cycle? or with the stock tune they should go away? 3.-Do I need to buy and install a DP fix even though my downpieps are catted? Again thank you for your help regards diego garcia
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08-15-2016, 03:31 PM	#2
csu87 Banned 2134 Rep 3,553 Posts Drives: 09 335xi Join Date: Nov 2013 Location: Northern Colorado iTrader: (0)	how the hell is mexico trying to regulate emissions? I havent seen 1 car down there that would pass
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08-15-2016, 05:36 PM	#3
zinner Major 561 Rep 1,130 Posts Drives: `17 X5 35d/`15 335i/`18 M550IX Join Date: Oct 2014 Location: Raleigh, NC iTrader: (0)	There is a readiness test that will be marked as completed that is read over the obd2 port. Your aftermarket cobb catted pipes probably aren't effective enough to allow that test to complete successful hence the power train codes you listed. Even if you disable the codes the emission check will never complete (at least in my experience). Probably will need to put the stock cats back on or look for another aftermarket option that is more effective.
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08-16-2016, 08:34 AM	#4
mexicobmw First Lieutenant 56 Rep 381 Posts Drives: car Join Date: Sep 2008 Location: mexico city iTrader: (0)	Thanks for the help, and I do agree this tests in the city are necessary the air quality sucks . Regards Diego
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