Cobb tune catless dp engine codes

chepy24 · 12-17-2014, 09:22 AM

Ptf tunes also clear this correct?

kevinbahnz · 02-04-2015, 09:26 AM

I didn't know that I'm not supposed to keep the DP fix installed for a long period of time(over a year). I uninstalled it last week because mixture and lean codes keep popping up. Once uninstalled these lamda codes came up instantly on cobb stg 2 aggressive map P2C2B, P2C7F, P2C6C and P29CF(<10 miles). I'm gonna have my nephew check the o2 sensors on the DPs to see if they're mixed up. If not I'm gonna replace all four o2s and spark plugs. Is there anything else I should look at?

shadow191 · 02-04-2015, 10:13 AM

If the sensors were swapped, you'd know pretty much on startup. The car will run very badly and backfire. Shop swapped mine and as soon as they started it, it began backfiring and almost stalling.

09BMW335i · 02-04-2015, 11:39 AM

Question with the Cobb since I am just getting ready to make the switch, If I put the BMS Dp fix on and leave it with the Cobb will that be ok or should I remove it and only put it on when I go have my emissions tested?

proTUNING Freaks · 02-04-2015, 12:00 PM

Quote:

Originally Posted by 09BMW335i

Question with the Cobb since I am just getting ready to make the switch, If I put the BMS Dp fix on and leave it with the Cobb will that be ok or should I remove it and only put it on when I go have my emissions tested?

You should not keep the DP fix plugged in at all times. It will cause a half to a full point deviation in lambda/AFR between bank 1 and 2 and upset fueling. Definitely remove at all times other than when you actually want it plugged in for off road use.

chadjones99 · 01-19-2022, 09:41 AM

So I am DP deleted and I have never had to do emissions, but I am selling the car and I told the buyer , but he lives in a emission control area of our state. my question is I have the cobb installed and should it not hide the fact that there are no cats?

12-17-2014, 09:22 AM	#23
chepy24 Captain 30 Rep 780 Posts Drives: 2009 alpine white 335i xdrive Join Date: Nov 2013 Location: denver iTrader: (0)	Ptf tunes also clear this correct?
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02-04-2015, 09:26 AM	#24
kevinbahnz Captain 157 Rep 709 Posts Drives: 2008 335xi sedan Join Date: Aug 2008 Location: Ma-NC iTrader: (1)	I didn't know that I'm not supposed to keep the DP fix installed for a long period of time(over a year). I uninstalled it last week because mixture and lean codes keep popping up. Once uninstalled these lamda codes came up instantly on cobb stg 2 aggressive map P2C2B, P2C7F, P2C6C and P29CF(<10 miles). I'm gonna have my nephew check the o2 sensors on the DPs to see if they're mixed up. If not I'm gonna replace all four o2s and spark plugs. Is there anything else I should look at? __________________
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02-04-2015, 10:13 AM	#25
shadow191 Lieutenant Colonel 181 Rep 1,681 Posts Drives: 2017 Volvo XC90 R-Design Join Date: Dec 2012 Location: GA iTrader: (3)	If the sensors were swapped, you'd know pretty much on startup. The car will run very badly and backfire. Shop swapped mine and as soon as they started it, it began backfiring and almost stalling.
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02-04-2015, 11:39 AM	#26
09BMW335i Second Lieutenant 29 Rep 259 Posts Drives: 2009 335i Join Date: Nov 2012 Location: northwest burbs, IL iTrader: (0) Garage List 2015 Ford Explorer ... [0.00] 2009 335I [0.00]	Question with the Cobb since I am just getting ready to make the switch, If I put the BMS Dp fix on and leave it with the Cobb will that be ok or should I remove it and only put it on when I go have my emissions tested? __________________ 09 335i Sport --MHD (Tune by Wedge )--Inlet System by Trueform Technologies --Tial BOV--Macht Schnell Catless Downpipes--AMS FMIC--Walbro 455 LPFP--HPF Gen2 Exhaust--SPEC Stage 3+ clutch / billet steel flywheel--
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01-19-2022, 09:41 AM	#28
chadjones99 Private 5 Rep 54 Posts Drives: 2011 328I Join Date: Apr 2018 Location: Arizona iTrader: (0) Garage List 2007 335 I [0.00] 2008 BMW M5 [0.00] 2011 BMW 328I [0.00]	emissions question So I am DP deleted and I have never had to do emissions, but I am selling the car and I told the buyer , but he lives in a emission control area of our state. my question is I have the cobb installed and should it not hide the fact that there are no cats?
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