Afr reading

Talk EMS and Computer related performance

Afr reading

Postby celigts » Sun May 13, 2012 5:09 pm

Yea that's what my buddy has told me that it can cause engine failure. From leaning it over right?
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Re: Afr reading

Postby OutToWinPAHC » Sun May 13, 2012 6:56 pm

Their job is limited, increase fuel either by MAP or MAF. So there is no fuel trim adjustment vs timing, temps or other calculated readings. So for some minor adjustments sure it can work, but they are just what they are. I used halltech in my last car (LS6/T56 swapped 240sx), and I am using AEM in the Skyline, but I think I may use the universal AEM EMS-4 in the ST185. You can pick them up for like 650 bucks, but you need to make the harness. I have to check into the type and pick ups of the trigger wheels but if they can work this is the cheapest way to standalone without megasquirt.
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Afr reading

Postby celigts » Sun May 13, 2012 7:25 pm

Well I ask about it for the reason I may get one for 100 from a buddy. But I'm interested in the aem if you find the way to make it.
91 Celica Alltrac - Parts pile pending instal :P
3SGTE project motor very slow
Intake/Heat shield project slowly moving
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Re: Afr reading

Postby RoAdbOy » Mon May 14, 2012 4:36 pm

celigts wrote:Yea that's what my buddy has told me that it can cause engine failure. From leaning it over right?

exactly :)
i'm for either the simplest one like SAFC, or a real standalone EMS like VI-PEC, Haltech, etc... :smokes:
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Re: Afr reading

Postby tubasteve » Thu May 31, 2012 1:57 am

RoAdbOy wrote:
celigts wrote:Yea that's what my buddy has told me that it can cause engine failure. From leaning it over right?

exactly :)
i'm for either the simplest one like SAFC, or a real standalone EMS like VI-PEC, Haltech, etc... :smokes:



i was reading last night here that using the safc that because the ecu uses the maf as the way to meter fuel into the car it also dictates the amount of load and how far to advance/retard the timing based on this sensor. its heavily frowned upon for the 3sgte and that it will do more harm than good, also the power primer also mentions this i believe.

the other options were to use a fpr, or other method to help with fuel issues, im just going over what i read, i was in year OLD threads, i hate using the search as i like reading through the threads.

going to look for this....

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