Afr too rich

[ART///SPEED]

after changing exhaust,my afr is too rich...exhaust sensor is working...can anybody here tell me why ? :hmmmm:

 

[papagoines]

after changing exhaust,my afr is too rich...exhaust sensor is working...can anybody here tell me why ? :hmmmm:

maybe ur ecu over compensating kot? mind telling ur engine name? what size are ur exhaust pipe?

 

[cartoon]

How you tell the air fuel ratio is reach? by data from sensor or meter?

 

[ART///SPEED]

maybe ur ecu over compensating kot? mind telling ur engine name? what size are ur exhaust pipe?

no no my ecu is working great...4G67 engine...2.3

Bump:

How you tell the air fuel ratio is reach? by data from sensor or meter?

from wideband and afr auto meter.already read from ecu signal and also o2 sensor..

 

[papagoines]

no no my ecu is working great...4G67 engine...2.3

Bump:

from wideband and afr auto meter.already read from ecu signal and also o2 sensor..

what i mean is that... every time you change something to your engine configuration like intake/exhaust/ignition etc... the ecu bound to detect something...

for example, the ecu detect that the exhaust gas flow faster and unrestricted....as a consequence of this change, the ECU may not provide appropriate control for the new configuration since during in factory, engineers tune wif the stock exhaust only...mostly for fuel economy and emission control..

better u go tune... maybe a piggyback?

one more thing....during the exhaust change, do you do ur extractor as well (tuned-length extractor maybe)? if so, does the distance of the o2 sensor from the extractor flanges changed?

 

[n/a_tune]

after this ur car have catylic converter or not??

 

[jinkl]

no no my ecu is working great...4G67 engine...2.3

Bump:

from wideband and afr auto meter.already read from ecu signal and also o2 sensor..

hmm u r using a 2.3 4g67 ? turbo or n/a , whts ur AFR at WOT ? wht piggyback ?

 

[ART///SPEED]

what i mean is that... every time you change something to your engine configuration like intake/exhaust/ignition etc... the ecu bound to detect something...

for example, the ecu detect that the exhaust gas flow faster and unrestricted....as a consequence of this change, the ECU may not provide appropriate control for the new configuration since during in factory, engineers tune wif the stock exhaust only...mostly for fuel economy and emission control..

better u go tune... maybe a piggyback?

one more thing....during the exhaust change, do you do ur extractor as well (tuned-length extractor maybe)? if so, does the distance of the o2 sensor from the extractor flanges changed?

already tune...not much helping to get lean only on idle 1000-4000rpm upper then that too rich

yup i do tuned-length extractor..the distance of o2 sensor not changed.

Bump:

after this ur car have catylic converter or not??

nope..........................................

Bump:

hmm u r using a 2.3 4g67 ? turbo or n/a , whts ur AFR at WOT ? wht piggyback ?

n/a,upper then bellow 13....neo

before this working fine with oem 4-2-1 and 2.2 with mufler...change big coz 2.2 too pushing my engine

 

[jinkl]

already tune...not much helping to get lean only on idle 1000-4000rpm upper then that too rich

yup i do tuned-length extractor..the distance of o2 sensor not changed.

Bump:

nope..........................................

Bump:

n/a,upper then bellow 13....neo

before this working fine with oem 4-2-1 and 2.2 with mufler...change big coz 2.2 too pushing my engine

errr at WOT its ok what around ~13 , if u say 11.5+ i would say rich la ?

 

[ART///SPEED]

errr at WOT its ok what around ~13 , if u say 11.5+ i would say rich la ?

yeah i know...what i mean is 12 -10