EGR Delete question

jjbaldasano · 10-14-2019, 09:32 AM

I have done extensive searches on this topic but have not been able to find clear answer my question regarding EGR delete:
If I remove EGR and EGR cooler by adding race pipe, blocking off EGR exhaust at manifold, remove cooler and plug coolant lines must I get ECU tune to prevent going into limp mode?
I understand without ECU tune I will throw codes and get check engine light.
I want to understand if I can do EGR delete first and then re-tune at a later date. Can this be done? Do specific sensors need to remain connected?
Thanks.

geko29 · 10-14-2019, 09:47 AM

If you completely remove the EGR valve from the car, you will get limp mode until you get a tune. I believe if you leave it electrically connected but zip-tied out of the way (so you can install the race pipe), you will get codes but the car will work normally.

jjbaldasano · 10-14-2019, 11:17 AM

OK thanks - I guess that is an option, but would be a bit clunky.
Maybe this is a silly question but can one block the EGR exhaust, remove EGR cooler (plug EGR cooler lines) and just leave the stock EGR valve in-place and plugged in?
Would there be any issues with that setup?

The reason I am asking is I want to remove the EGR cooler due to 4873 code (and leak).

jjbaldasano · 10-14-2019, 11:23 AM

Additional follow up to post #3
Understand that set up get codes thrown and SES light.

I eventually plan on getting tune to remove the EGR codes but wanted to phase in the changes to spread the cost

geko29 · 10-14-2019, 12:28 PM

I think you could remove the cooler, do the block-off and paperclip mod the EGR valve so it won't open. Prior to getting my tune and race pipe, I did the paperclip mod, but did not remove the EGR cooler. But I don't see why it wouldn't work.

Others with more experience/knowledge can hopefully step in and clarify.

lnxguy · 10-14-2019, 03:32 PM

Quote:

Originally Posted by jjbaldasano

OK thanks - I guess that is an option, but would be a bit clunky.
Maybe this is a silly question but can one block the EGR exhaust, remove EGR cooler (plug EGR cooler lines) and just leave the stock EGR valve in-place and plugged in?
Would there be any issues with that setup?

The reason I am asking is I want to remove the EGR cooler due to 4873 code (and leak).

Yeah, you'll be fine.

jjbaldasano · 10-14-2019, 04:19 PM

Great thanks.

Does the Temperature sensor which goes to the EGR cooler need to remain connected or can that be removed?

10-14-2019, 09:32 AM	#1
jjbaldasano Registered 1 Rep 20 Posts Drives: 2011 335d Join Date: Dec 2016 Location: SE Pennsylvania iTrader: (0)	EGR Delete question I have done extensive searches on this topic but have not been able to find clear answer my question regarding EGR delete: If I remove EGR and EGR cooler by adding race pipe, blocking off EGR exhaust at manifold, remove cooler and plug coolant lines must I get ECU tune to prevent going into limp mode? I understand without ECU tune I will throw codes and get check engine light. I want to understand if I can do EGR delete first and then re-tune at a later date. Can this be done? Do specific sensors need to remain connected? Thanks.
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10-14-2019, 09:47 AM	#2
geko29 Major 1562 Rep 1,422 Posts Drives: 2023 M3 6MT Join Date: May 2012 Location: Illinois, USA iTrader: (2)	If you completely remove the EGR valve from the car, you will get limp mode until you get a tune. I believe if you leave it electrically connected but zip-tied out of the way (so you can install the race pipe), you will get codes but the car will work normally. __________________
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10-14-2019, 11:23 AM	#4
jjbaldasano Registered 1 Rep 20 Posts Drives: 2011 335d Join Date: Dec 2016 Location: SE Pennsylvania iTrader: (0)	Additional follow up to post #3 Understand that set up get codes thrown and SES light. I eventually plan on getting tune to remove the EGR codes but wanted to phase in the changes to spread the cost
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10-14-2019, 12:28 PM	#5
geko29 Major 1562 Rep 1,422 Posts Drives: 2023 M3 6MT Join Date: May 2012 Location: Illinois, USA iTrader: (2)	I think you could remove the cooler, do the block-off and paperclip mod the EGR valve so it won't open. Prior to getting my tune and race pipe, I did the paperclip mod, but did not remove the EGR cooler. But I don't see why it wouldn't work. Others with more experience/knowledge can hopefully step in and clarify. __________________
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10-14-2019, 04:19 PM	#7
jjbaldasano Registered 1 Rep 20 Posts Drives: 2011 335d Join Date: Dec 2016 Location: SE Pennsylvania iTrader: (0)	Great thanks. Does the Temperature sensor which goes to the EGR cooler need to remain connected or can that be removed?
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10-14-2019, 11:17 AM	#3
jjbaldasano Registered 1 Rep 20 Posts Drives: 2011 335d Join Date: Dec 2016 Location: SE Pennsylvania iTrader: (0)	OK thanks - I guess that is an option, but would be a bit clunky. Maybe this is a silly question but can one block the EGR exhaust, remove EGR cooler (plug EGR cooler lines) and just leave the stock EGR valve in-place and plugged in? Would there be any issues with that setup? The reason I am asking is I want to remove the EGR cooler due to 4873 code (and leak).
	Appreciate 0 Quote