Post O2s and egt turned off. Will it be a problem?

boboleto · 08-09-2011, 11:59 PM

Im soon gonna be getting a set of euro headers for my z4mcoupe and was planning to get the ESS tune with the after cats O2 sensors and egt turned off. (planning to have them unplugged al together and stored away). Is this gonna cause any problems performance wise? Will I get a CEL/SES? Dont really want to get into the hassle of welding bungs into the S pipe for the post cat O2s and egt. Still gonna run the stock S pipe with their cats just to keep things green. But since I live in Panama we dont have any type of emission test whatsoever. For my understanding post cats O2s and egt are only for emission purpose and monitoring the cats perfomace right?

ZStig · 08-10-2011, 03:08 PM

You'll likely have issues with at least a check engine light, car may also run rough

ESS doesn't recommend running with no sensors connected

The rear sensors should NOT affect performance, but if something is wrong with the engine, they're a backup failsafe to shut the engine down to save it

Cut off the egt bung from your old headers, grab these adapters, and pay an exhaust shop to weld it in. Should NOT be expensive

http://stores.channeladvisor.com/aut...temid=13552227

Beedub · 08-10-2011, 04:32 PM

^^^^^

OP trust me Roffle knows more than most on this subject ;-)

ZStig · 08-10-2011, 04:38 PM

not by choice. hahahahhaaa

boboleto · 08-11-2011, 12:47 AM

Quote:

Originally Posted by Roffle Waffle

You'll likely have issues with at least a check engine light, car may also run rough

ESS doesn't recommend running with no sensors connected

The rear sensors should NOT affect performance, but if something is wrong with the engine, they're a backup failsafe to shut the engine down to save it

Cut off the egt bung from your old headers, grab these adapters, and pay an exhaust shop to weld it in. Should NOT be expensive

http://stores.channeladvisor.com/aut...temid=13552227

Seems to be the only way around it, talk to ESS and said we need to have egt and secondary O2´s connected, otherwise will get CEL. Im just not so confident about this mod since some users are still getting CEL even with the egt and secondary O2s relocated at the "S" pipe. Guess Ill just give it a try and see if im part of the lucky half thats not get a CEL. If i do ill just get an ESS tune with the secondary O2s "shut down".

Whats the reason for relocating the egt to the "S" pipe? Cant I just weld it into the Euro Headers as in the US catted ones?

ZStig · 08-11-2011, 04:49 PM

read up on the sensor placement here

http://www.zpost.com/forums/showthread.php?t=519048

you're putting it BEHIND the section one cats for a reason, because... well... they need to be reading the ratios from behind the cats (since the euro headers have no cats, they go behind the secondary cats in the system)

boboleto · 08-11-2011, 10:20 PM

I understand the relocation of the secondary O2s behind the catts of section 1. But reading through your thread link, "Jumbosock" made a comment about putting the egt bung in the Euro Headers (As in the same position of our US Headers) to avoid "EGT plausibility code" (2C93).

Has anyone besides Jumbosock installed their EGT into Euro headers instead of te section 1 pipe?

08-09-2011, 11:59 PM	#1
boboleto Enlisted Member 3 Rep 32 Posts Drives: 2007 Z4 ///M coupe Join Date: Sep 2009 Location: Panama City iTrader: (0)	Post O2s and egt turned off. Will it be a problem? Im soon gonna be getting a set of euro headers for my z4mcoupe and was planning to get the ESS tune with the after cats O2 sensors and egt turned off. (planning to have them unplugged al together and stored away). Is this gonna cause any problems performance wise? Will I get a CEL/SES? Dont really want to get into the hassle of welding bungs into the S pipe for the post cat O2s and egt. Still gonna run the stock S pipe with their cats just to keep things green. But since I live in Panama we dont have any type of emission test whatsoever. For my understanding post cats O2s and egt are only for emission purpose and monitoring the cats perfomace right?
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08-10-2011, 03:08 PM	#2
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	You'll likely have issues with at least a check engine light, car may also run rough ESS doesn't recommend running with no sensors connected The rear sensors should NOT affect performance, but if something is wrong with the engine, they're a backup failsafe to shut the engine down to save it Cut off the egt bung from your old headers, grab these adapters, and pay an exhaust shop to weld it in. Should NOT be expensive http://stores.channeladvisor.com/aut...temid=13552227 __________________ Last edited by ZStig; 08-10-2011 at 03:15 PM..
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08-10-2011, 04:32 PM	#3
Beedub Major General 423 Rep 5,328 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	^^^^^ OP trust me Roffle knows more than most on this subject ;-) __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com
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08-10-2011, 04:38 PM	#4
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	not by choice. hahahahhaaa __________________
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08-11-2011, 04:49 PM	#6
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	read up on the sensor placement here http://www.zpost.com/forums/showthread.php?t=519048 you're putting it BEHIND the section one cats for a reason, because... well... they need to be reading the ratios from behind the cats (since the euro headers have no cats, they go behind the secondary cats in the system) __________________
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08-11-2011, 10:20 PM	#7
boboleto Enlisted Member 3 Rep 32 Posts Drives: 2007 Z4 ///M coupe Join Date: Sep 2009 Location: Panama City iTrader: (0)	I understand the relocation of the secondary O2s behind the catts of section 1. But reading through your thread link, "Jumbosock" made a comment about putting the egt bung in the Euro Headers (As in the same position of our US Headers) to avoid "EGT plausibility code" (2C93). Has anyone besides Jumbosock installed their EGT into Euro headers instead of te section 1 pipe?
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