Power FC Min injector pulsewide and idle AFR
#1
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Min injector pulsewide and idle AFR
Hi,
I am having stock RX7 with Power FC and Datalogit. Now I am curious about the idle AFR because I could not rise it above 12 even if I lover the correction value under the InjMap. I have stock injectors, no airpump therefore I turn of the O2 feedback. When I change the correction values from 1.200 to 1.000 I manage to risen the AFR from around 11.3 to 12.2. After that the AFR under the idle did not change. I manage to lover the InjFrPr form around 3.0 to 2.56, which I found it is the lowest value. The engine is warmed up to over 80C.
Can someone explain me what is the lowest value of injector pulsewide? Is this 2.56? And this is the reason why I cannot lean out the idle? How can I lower the injector pulse? I cannot figure it out why there is 1.318 ms written in the BaseMap if the lower value is 2.56, I presume it is 2.56 ms.
Thank you very much.
I am having stock RX7 with Power FC and Datalogit. Now I am curious about the idle AFR because I could not rise it above 12 even if I lover the correction value under the InjMap. I have stock injectors, no airpump therefore I turn of the O2 feedback. When I change the correction values from 1.200 to 1.000 I manage to risen the AFR from around 11.3 to 12.2. After that the AFR under the idle did not change. I manage to lover the InjFrPr form around 3.0 to 2.56, which I found it is the lowest value. The engine is warmed up to over 80C.
Can someone explain me what is the lowest value of injector pulsewide? Is this 2.56? And this is the reason why I cannot lean out the idle? How can I lower the injector pulse? I cannot figure it out why there is 1.318 ms written in the BaseMap if the lower value is 2.56, I presume it is 2.56 ms.
Thank you very much.
#3
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I removed the air pump and blocked all the ports. Is this extra air hose connected through the air pump? Otherwise I did not notice some extra air hose in the lower intake manifold.
I played with the injector lag time and when I reduced it I manage to lean out the idle. But with that I lean out the entire map which I do not want to do. I would like to keep the stock settings for the injectors untouched. Is there some other way?
I played with the injector lag time and when I reduced it I manage to lean out the idle. But with that I lean out the entire map which I do not want to do. I would like to keep the stock settings for the injectors untouched. Is there some other way?
#4
rotorhead
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That is a service manual explanation. This thread has some pics:
https://www.rx7club.com/3rd-generati...broken-973106/
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Thanks for explanation. Is this the air hose, that supply the air to the primary injectors? As I remember it is connected to the Y-pipe and I did not plug it. But I will check the hose again.