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Old 10-26-2010, 05:52 PM
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Default Afr question
What should a stock ls turbo read on a aem euego wideband or what does urs read plz lmk asap
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Old 10-26-2010, 06:38 PM
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Default Re: Afr question
11.5 afr
if you are 11s to 12s you will be ok i would not want to run a stock piston lean
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Old 10-26-2010, 06:40 PM
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Default Re: Afr question
Originally Posted by ashb82
11.5 afr
if you are 11s to 12s you will be ok i would not want to run a stock piston lean

you only need to run 11.8 under boost, under vac you should be running 14.7
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Old 10-26-2010, 06:44 PM
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Default Re: Afr question
aem uego's i run 11.0 under full boost.

motec brand widebands i run 11.5 under full boost
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Old 10-26-2010, 06:45 PM
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Default Re: Afr question
Originally Posted by turbociv910
aem uego's i run 11.0 under full boost.

motec brand widebands i run 11.5 under full boost
any particular reason for the offset?
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Old 10-26-2010, 07:14 PM
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Default Re: Afr question
Weird ok mine hits like 15.8 then I'll rev it and it will settle at 14.7 and slowly creep up the car is tuned on hondata s100 and ideas or tips thank u
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Old 10-26-2010, 07:19 PM
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Default Re: Afr question
a slow creep up is usually an indication of a sensor about to fail, mine did that at stop lights, used to slowly creep up to 17afr and back down again to 14, the sensor failed completely this morning.
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Old 10-26-2010, 07:26 PM
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Default Re: Afr question
Wat sensor not the o2 right cause mines new maybe 20 miles on it
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Old 10-26-2010, 07:27 PM
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Default Re: Afr question
Originally Posted by spoon93
Wat sensor not the o2 right cause mines new maybe 20 miles on it
hmmm, odd, do you notice any difference in the way the engine runs? Are you simulating the factory o2 with the wideband, or are you running a factory o2 in conjunction with the wideband.
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Old 10-26-2010, 07:38 PM
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Default Re: Afr question
Aem eugo wideband with the original Bosch sensor it's weird wen I installed it it was perfect but car has been sitting for week and a half and started reading different now do I maybe have to calibrate it idk
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Old 10-26-2010, 07:39 PM
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Default Re: Afr question
i would try a recalibration if there's no audible or visible change in the way the engine runs, typically when you start getting 15 or above you can start to hear the engine running lean or missing
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Old 10-26-2010, 07:48 PM
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Default Re: Afr question
Ok sounds good thanks alot man for your help I appreciate it
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Old 10-26-2010, 07:50 PM
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Default Re: Afr question
Originally Posted by spoon93
Ok sounds good thanks alot man for your help I appreciate it
just remember...afr isnt a single number, there is an entire map your computer uses to target different afr's across different conditions, you sound like your new at this based on the first post lol
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Old 10-26-2010, 07:58 PM
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Default Re: Afr question
Lol u pinned that out I am deff a noob to this section ok here's one more the wire that goes to the ecu I did not connect I only did the ground and two power wires do I need to run it to my ecu
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Old 10-26-2010, 08:02 PM
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Default Re: Afr question
you still have your factory o2 sensor hooked up as normal correct?
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Old 10-26-2010, 08:06 PM
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Default Re: Afr question
Oh no only the wideband with o2 it's located before the cat but there is no cat
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Old 10-26-2010, 08:06 PM
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Default Re: Afr question
I used to have a good example target AFR graph saved but it seems I lost it. IIRC I got it from Keebler's site back in the day. Anyway here are a couple decent examples from google img.

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Old 10-26-2010, 08:11 PM
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Default Re: Afr question
Originally Posted by spoon93
Oh no only the wideband with o2 it's located before the cat but there is no cat
interesting, that raises questions about how your tune is setup
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Old 10-27-2010, 05:30 AM
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Default Re: Afr question
**** 11.8? im running lean as **** at 12.9-13.0. been boosted for about 3k miles on my 190k motor haha.
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Old 10-27-2010, 05:36 AM
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Default Re: Afr question
Originally Posted by Jeffro1265
**** 11.8? im running lean as **** at 12.9-13.0. been boosted for about 3k miles on my 190k motor haha.
have you checked your plugs at all? thats a tad bit on the lean side
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Old 10-27-2010, 05:37 AM
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Default Re: Afr question
Originally Posted by Jeffro1265
**** 11.8? im running lean as **** at 12.9-13.0. been boosted for about 3k miles on my 190k motor haha.
how much boost
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Old 10-27-2010, 06:55 AM
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Default Re: Afr question
Originally Posted by ashb82
how much boost
57 trim@9psi. car runs like a freakin rocket LOL. trapped 112 through the 1/4,
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Old 10-27-2010, 07:33 AM
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Default Re: Afr question
the car runs better in the 12 to 13 afr but the reason you tune to 11.5 is for cooling the cylinders and valves
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Old 10-27-2010, 08:38 AM
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Default Re: Afr question
So 15.8 at idle is bad right I'm leaning out right also I jus put new plugs i'n today the old ones wer a lil black not chalky
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Old 10-27-2010, 08:54 AM
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Default Re: Afr question
Originally Posted by spoon93
So 15.8 at idle is bad right I'm leaning out right also I jus put new plugs i'n today the old ones wer a lil black not chalky
thats a little too lean for idle, you want to be 14.7
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