catless ar downpipes

Jeef · 12-12-2011, 09:08 PM

Installed my downpipes over the weekend, and its not throwing any CEL codes or anything. Could the sensor be broken?

thebigragu99 · 12-12-2011, 09:09 PM

Quote:

Originally Posted by Jeef

Installed my downpipes over the weekend, and its not throwing any CEL codes or anything. Could the sensor be broken?

Sometimes you need a couple of drive cycles.

Jeef · 12-12-2011, 09:15 PM

Drove it for a while now, a hundred miles or so and did some WOT.

dbogner10 · 12-12-2011, 09:37 PM

dont worry it will come up, mine took about a week believe it or not..

335i101 · 12-12-2011, 10:01 PM

Patience young grasshopper...

thebigragu99 · 12-13-2011, 12:35 AM

Quote:

Originally Posted by 335i101

Patience young grasshopper...

Exactly!

samchoi604 · 12-13-2011, 01:16 AM

Would be nice if it never comes on

Jeff@TopGearSolutions · 12-13-2011, 02:09 AM

If you have the right tune it won't come on at all....

pits200 · 12-13-2011, 09:18 AM

I've had mine on for 4k miles and still no light.

JStang · 12-13-2011, 11:15 AM

Quote:

Originally Posted by Jeff@topgearsolutions

If you have the right tune it won't come on at all....

This

Jeef · 12-13-2011, 03:03 PM

I have a COBB AP, and thanks for the info guys! I will wait to see if the light comes on. I still have the BMS dp fix that I didn't put in, hopefully I won't have to?

Jeff@TopGearSolutions · 12-13-2011, 03:08 PM

Quote:

Originally Posted by Jeef

I have a COBB AP, and thanks for the info guys! I will wait to see if the light comes on. I still have the BMS dp fix that I didn't put in, hopefully I won't have to?

If you have a Cobb AP on stage 2 maps there would be no reason to have a CEL because it is cleared automatically for catless dp as its a requirement to use stage 2 maps.

You do not need to use the BMS DP fix.

Jeef · 12-13-2011, 03:09 PM

Sounds good to me, thanks a lot!

bryce · 12-13-2011, 03:26 PM

this brings up an interesting point- does the cobb "auto-clearing" allow readiness to be set? or does the cobb tune require a dpfix to pass emissions in states that just plug into the obdII port?

cable96 · 12-13-2011, 04:06 PM

i read that ull still need the dp fix inorder to pass the emissions

NihonX · 12-13-2011, 05:04 PM

You're doing it wrong. You need to drive faster.

ar design III · 12-13-2011, 05:49 PM

Quote:

Originally Posted by bryce

this brings up an interesting point- does the cobb "auto-clearing" allow readiness to be set? or does the cobb tune require a dpfix to pass emissions in states that just plug into the obdII port?

The Cobb will not allow the car to pass a readiness test. You will need a DP Fix

Quote:

Originally Posted by cable96

i read that ull still need the dp fix inorder to pass the emissions

Correct, the DP fix brings the values back in line so the car still thinks the cat is present.

Jeef · 12-13-2011, 06:04 PM

Okay so I still need to install the bms dp fix. Thanks!

ar design III · 12-13-2011, 06:09 PM

Quote:

Originally Posted by Jeef

Okay so I still need to install the bms dp fix. Thanks!

You really only need it for an emissions test. If you are running Stg2 maps, you will not get a light, but AFAIK a scan will still reveal codes for catalyst efficiency.

Mike@N54Tuning.com · 12-14-2011, 03:16 PM

Quote:

Originally Posted by Jeef

Installed my downpipes over the weekend, and its not throwing any CEL codes or anything. Could the sensor be broken?

With very early BMW DME software sometimes it took up to 500 to get a light, so it really depends on driving style, DME software, etc.

If the sensor was broken you would get a different type of code

Also most tunes have an auto clear function so if you are running a tune and thats on that could also be a reason you are not seeing a code.

Mike

12-12-2011, 09:08 PM	#1
Jeef Lieutenant Colonel 396 Rep 1,943 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	catless ar downpipes Installed my downpipes over the weekend, and its not throwing any CEL codes or anything. Could the sensor be broken?
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12-12-2011, 09:15 PM	#3
Jeef Lieutenant Colonel 396 Rep 1,943 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	Drove it for a while now, a hundred miles or so and did some WOT.
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12-12-2011, 09:37 PM	#4
dbogner10 Private 29 Rep 95 Posts Drives: 08 e92 335i Join Date: Jun 2011 Location: * iTrader: (0)	dont worry it will come up, mine took about a week believe it or not..
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12-12-2011, 10:01 PM	#5
335i101 Lieutenant 88 Rep 590 Posts Drives: 2008 E60 M5 Join Date: Dec 2010 Location: ND iTrader: (2)	Patience young grasshopper... __________________ 2021 Mercedes G550 2015 X5M 2020 Supra-JB4, DP 2008 M5 with muffler delete-sold 2007 650i-sold 2008 335i-JB4, DP, Meth-sold
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12-13-2011, 01:16 AM	#7
samchoi604 Colonel 64 Rep 2,334 Posts Drives: black on black Join Date: Mar 2009 Location: Burnaby, BC iTrader: (3)	Would be nice if it never comes on
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12-13-2011, 02:09 AM	#8
Jeff@TopGearSolutions 3482 Rep 79,210 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	If you have the right tune it won't come on at all....
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12-13-2011, 09:18 AM	#9
pits200 Colonel 556 Rep 2,598 Posts Drives: 09 335i X-Drive Black Sapphire Join Date: Mar 2010 Location: Pittsburgh iTrader: (1)	I've had mine on for 4k miles and still no light.
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12-13-2011, 03:03 PM	#11
Jeef Lieutenant Colonel 396 Rep 1,943 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	I have a COBB AP, and thanks for the info guys! I will wait to see if the light comes on. I still have the BMS dp fix that I didn't put in, hopefully I won't have to?
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12-13-2011, 03:09 PM	#13
Jeef Lieutenant Colonel 396 Rep 1,943 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	Sounds good to me, thanks a lot!
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12-13-2011, 03:26 PM	#14
bryce Banned 118 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	this brings up an interesting point- does the cobb "auto-clearing" allow readiness to be set? or does the cobb tune require a dpfix to pass emissions in states that just plug into the obdII port?
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12-13-2011, 04:06 PM	#15
cable96 Second Lieutenant 15 Rep 222 Posts Drives: threethreefive Join Date: Oct 2009 Location: USA iTrader: (5)	i read that ull still need the dp fix inorder to pass the emissions
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12-13-2011, 05:04 PM	#16
NihonX Captain 64 Rep 899 Posts Drives: 2011 VO 1M Join Date: Sep 2008 Location: Antioch iTrader: (8)	You're doing it wrong. You need to drive faster. __________________ 2011 VO 1M
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12-13-2011, 06:04 PM	#18
Jeef Lieutenant Colonel 396 Rep 1,943 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	Okay so I still need to install the bms dp fix. Thanks!
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