Cobb stage 2 Catless DPs versus Cel questions

Mrida335 · 07-23-2013, 06:38 PM

Good evening gentleman, I have been searching this topic front to back for a bit now and have found volumes of conflicting info.

The question is: if I run Catless downpipes AND the Cobb AP stage 2 maps, will there be any type of CEL or other electronic signal, code, notification, e-mail, smoke signal, morse code, or sign language in German?

The reason I'm asking the question is that I have seen info on here stating that "if your not running the stage 2 maps you need the BMS down pipe fix".

This to me doesn't make any sense. If the Stage 2 maps bypass the Cel why can't this be programmed onto other maps? Or is there no computer/cobb bypass and this is all myth and you need a proper cel fix such as the BMS?

Thanks for the help guys.

135Pats · 07-23-2013, 06:43 PM

If you run the appropriate STG2/2+ maps, you will not get ANY cat related codes.

People use DPfix for emissions testing. Cobb will suppress the codes, but that has nothing to do with passing emissions.

Mrida335 · 07-23-2013, 06:46 PM

Quote:

Originally Posted by 135Pats

If you run the appropriate STG2/2+ maps, you will not get ANY cat related codes.

People use DPfix for emissions testing. Cobb will suppress the codes, but that has nothing to do with passing emissions.

Ok thank you. Follow up question. If the Cobb Ap is suppressing the code does why does it fail emissions on an OBD2 check?

deathbunny · 07-23-2013, 06:59 PM

It isn't suppressing the codes it is clearing them out as soon as they are generated from what I understand. Any of the cobb maps the require downpipes will autoclear the codes generated from them. Like said above this will not pass emissions it just keeps your CEL from coming on.

BD_F22 · 07-23-2013, 07:00 PM

Because although it clears the codes the car cannot achieve "readiness" without the dpfix

Mrida335 · 07-23-2013, 09:19 PM

Ok, Thanks for info guys. Its not a perfect solution. Cell fix it is. I plan on installing catless dp's within the next 2-3 weeks and started realizing that the Cobb may not do all that I need in this case. I come from the sube world and the STi was bit less finicky. I use to have the protune software and a gen 1 AP back on my 2005. Its been a while but I forgot how having to depend solely on pre-made maps can be a pain in the Arse.

Cant wait to see how she does after a little tune session.

07-23-2013, 06:38 PM	#1
Mrida335 Private First Class 88 Rep 135 Posts Drives: E90 335xi Join Date: Apr 2013 Location: Boston, Ma iTrader: (0)	Cobb stage 2 Catless DPs versus Cel questions Good evening gentleman, I have been searching this topic front to back for a bit now and have found volumes of conflicting info. The question is: if I run Catless downpipes AND the Cobb AP stage 2 maps, will there be any type of CEL or other electronic signal, code, notification, e-mail, smoke signal, morse code, or sign language in German? The reason I'm asking the question is that I have seen info on here stating that "if your not running the stage 2 maps you need the BMS down pipe fix". This to me doesn't make any sense. If the Stage 2 maps bypass the Cel why can't this be programmed onto other maps? Or is there no computer/cobb bypass and this is all myth and you need a proper cel fix such as the BMS? Thanks for the help guys. __________________ Current Garage 2018 M3 ZCP - Sakhir Orange 2019 x3 M40 - Glacier Silver 2002 745i - Kalahari Beige
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07-23-2013, 06:43 PM	#2
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	If you run the appropriate STG2/2+ maps, you will not get ANY cat related codes. People use DPfix for emissions testing. Cobb will suppress the codes, but that has nothing to do with passing emissions. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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07-23-2013, 06:59 PM	#4
deathbunny Lieutenant 22 Rep 414 Posts Drives: 2012 E92 M3 Join Date: May 2013 Location: Vegas iTrader: (2)	It isn't suppressing the codes it is clearing them out as soon as they are generated from what I understand. Any of the cobb maps the require downpipes will autoclear the codes generated from them. Like said above this will not pass emissions it just keeps your CEL from coming on. __________________ "And just one question I might ask yah, and it might sound like A disaster, can you make this thing go faster?" Last edited by deathbunny; 07-23-2013 at 07:54 PM..
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07-23-2013, 07:00 PM	#5
BD_F22 BD_e92 358 Rep 1,748 Posts Drives: 2015 m235i xDrive Join Date: Nov 2012 Location: NYC iTrader: (9)	Because although it clears the codes the car cannot achieve "readiness" without the dpfix
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07-23-2013, 09:19 PM	#6
Mrida335 Private First Class 88 Rep 135 Posts Drives: E90 335xi Join Date: Apr 2013 Location: Boston, Ma iTrader: (0)	Ok, Thanks for info guys. Its not a perfect solution. Cell fix it is. I plan on installing catless dp's within the next 2-3 weeks and started realizing that the Cobb may not do all that I need in this case. I come from the sube world and the STi was bit less finicky. I use to have the protune software and a gen 1 AP back on my 2005. Its been a while but I forgot how having to depend solely on pre-made maps can be a pain in the Arse. Cant wait to see how she does after a little tune session. __________________ Current Garage 2018 M3 ZCP - Sakhir Orange 2019 x3 M40 - Glacier Silver 2002 745i - Kalahari Beige
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