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AVC-R Injector Duty Cyle - WTF??

BoOsTeD_RB26

By BoOsTeD_RB26,
in Engines & Forced Induction

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BoOsTeD_RB26 Experienced

BoOsTeD_RB26

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Posted

Hey all,

Playing around with my AVC-R today and noticed that at idle...it says that injector duty cycle is at 86% or something. Anyways, when you rev it, it goes down...say to 80%.

After this I took the car out and after driving I hit the "peak" button and it said that it peaked at 90%...wtf?

I don't get how this function works!

can anyone help me?

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https://www.sau.com.au/forums/topic/8722-avc-r-injector-duty-cyle-wtf/
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Roy Grand Master

Roy

Posted
Posted

Yeh im interested in hearing responses to this.

Im not sure but i think it has something to do with the installation. When installed it can be wired two different ways, yours like mine has been wired so that the injector duty cycle function does not operate correctly.

As i understand it this means we can use our AVCR for another function, i think speedometer, when those who have it wired to show duty cycle cannot accurately gauge road speed.

Me thinks????

BoOsTeD_RB26 Experienced

BoOsTeD_RB26

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Posted

i remember talking to my tuner about it. he said he can either set it up in such a way that...to control boost u can either do it by duty cycle or revs.

which is better.....and if it aint connected (which im not sure about) why is it showing a reading?

uLa32 Proficient

uLa32

Posted
Posted

your tuner is right. one of the wires either connects to the rpm or the injector duty wire from the ecu.

connecting the wire to monitor injector duty was just that, monitor only. but if you connect the wire to the rpm, you can also use the other features such as gear based boost or different boost levels according to revs, as well as monitor revs. mines connected to monitor revs but i dont use gear learning, gear spcific boost, etc.

the part where you can adjust duty cycle is nothing to do with the reading of injector duty cycle.

eg/ mines set to 1bar with a duty cycle of 50%. at full throttle, this keeps me at about 1.00bar with small spikes no more than 1.05bar. putting duty cycle to 48-49% only gets me boosting a max of 0.95bar.

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