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needsboost Mar 18, 2016 08:05 PM

Injector pulse width 0? log inside
 
3 Attachment(s)
Hey guys,
I've been having some sputtering issues in 3rd+ gear after a long winter swap (build below). 1st and 2nd in boost are ok, sputters a tiny bit at constant speed (cruising at 15, 25, speed limit stuff). An example is in the log, logID 120-~300 is all constant speed (school zone) and every couple seconds i would feel a slight bog.

Maybe you can tell by the waviness of the O2 sensor readings? they swing from less than 0.0X to 0.7+ pretty quickly. everything else in the log looks pretty normal. below is a graph of what my O2 is reading during the constant speed cruising. O2 sensor is brand new as of today, logs from the previous sensor look the same.

Attachment 326942

Looking through the logs, I see that IPW drops to 0, most of the time right after a sudden change to TPS %, but not all the time. I was under the assumption that it should go to the min IPW, not 0?


Attachment 326943

GP148 Oct 20, 2017 03:58 AM

i am having a similar issue. do you know what the issue was btw. Would be great if you could share what you found fixed te issue

pisyakot Oct 20, 2017 08:50 AM

Sry for English. When you decel(brake the engine), in 1 second the fuel cut takes place. And resume when rpm < ~1200

GP148 Oct 20, 2017 06:00 PM

This happens under low load, Cruize driving, but mainly when decel. How can I fix this

4b11slayer Oct 20, 2017 11:07 PM

Tps readings look weired also. Set tps to 14.6 with evo scan


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