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95% inj duty cyle at idle??

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lauj2gdsm

20+ Year Contributor
326
2
Jan 16, 2005
stockton, California
Ok my car been running really crappy lately at idle and also throwing missfire code.. will today i was missing with my avc-r and switch over to injector duty cycle monitor.. at idle it was 95% while dirving my duty cycle was a 95% dropping down to 80% as i go on the throttle.. Dude is that correct at 95%???? does not sound right at all any wise man??
 
With 650's @ 95% inj. duty cycle at idle Its hard to believe the car would even run... Somthing has to be off. No wideband yet?
 
With 650's @ 95% inj. duty cycle at idle Its hard to believe the car would even run... Somthing has to be off. No wideband yet?

Yea it starts really hard.. dies a few time at start up.. sometime it gets flooded too i think because if it dies a few time ill have to wait several minutes before i can start it again.. then when it holds idle it hold idle at 100 to 450 then ( really crappy ) after a few minutes it will go to 750 and hold fine but i can feel the studdering. and yes i got a wide band but gave up on putting it on at the time due to this issue. you guys think it can be the mas??? I think i just got to get my lazy ass to do a boost leak test.
 
Something is definitely wrong, that's like your injectors firing for full throttle, at idle LOL.
 
Ok my car been running really crappy lately at idle and also throwing missfire code.. will today i was missing with my avc-r and switch over to injector duty cycle monitor.. at idle it was 95% while dirving my duty cycle was a 95% dropping down to 80% as i go on the throttle.. Dude is that correct at 95%???? does not sound right at all any wise man??


That's just reading backwards. It's really 5% at idle, and increases to 20% as throttle is applied.

I'm not familiar with your tuning software(what is it btw? It says ECU+piggyback), but on another turbo project I built, I had the same backwards IDC problem. Wiring was correct, but I had incorrectly choosen the method of reading the IDC. I switched back, and it read fine. This was with Innovate software.
 
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