Help me read my logs

[ajpturbo]

Placebo effect I was only asking because I wanted you to bang yourself

 

[Scott4957]

Placebo effect I was only asking because I wanted you to bang yourself

The AJ we know and love LOL

Sent from my SM-N910V using Tapatalk

 

[StealBlueSHO]

Placebo effect I was only asking because I wanted you to bang yourself

I appreciate the effort good Sir, it did not go unnoticed. 

Sent from my Nexus 6P using Tapatalk

 

[ZSHO]

After triple checking the spark plugs and I decided to reseat the PCV assembly since I just kinda moved it out of the way when I put the plugs in. Turns out when I moved it back into place there is a rubber gasket that helps seal it to the valve cover, well it had gotten rolled/bunched. Fixed it, tightened  it back down. Started running through the tune Torrie sent me and my AFR was looking much better, which maybe contributed to the incorrectly seated PCV assembly... as a faulty one can cause you to run lean. Anyway... very happy with the tune, here are some data logs that look pretty clean I would think...

SBSHO would you be kind enough to add your signature,thanks.  Z  Btw the 15's do have a different pcv system which use a (crank pressure sensor).  Z

 

[StealBlueSHO]

I said MAYBE because I wasn't sure and I do not know if that contributed to the leaner AFR. I know on some of my older cars an improperly sealed pcv valve can cause excess air to get into the system that is not accounted for by the MAF. Since the Ecoboost motors do not use a MAF but MAP of which I am not as familiar with troubleshooting I can only speculate. The PVC assembly/valve does happen to be after both MAP sensors on our valve cover but the line that runs to the intake is in-between the manifold map and the map before the throttle body. Again, I am speculating that if not sealed correctly would could cause excess air to be brought in. Again, speculating.

http://www.freeasestudyguides.com/pcv-system-problems.html was one of the sources I was pulling from.

I had an older Ford which had a PCV valve get stuck open, it caused the car to run like crap.

Tough crowd...

 

[SHOdded]

The explanation for this "PCV effect" could have mechanical, electrical, or logic components, we just haven't figured it out yet.  Many a time I have run across situations that have not been able to be explained by experts, yet they occur, and can be produced on-demand with the right set of inputs.  This is apparently one such situation.  There is a black box here that needs to be figured out, just hasn't been yet.

Main thing is that you are happy with the way your SHO is running, and we would like to continue receiving updates in the future to see if the fix is truly in place.

Z, any idea what the tieup is with the crank pressure sensor on the 2015s?  First I've heard of it.

 

[ZSHO]

The explanation for this "PCV effect" could have mechanical, electrical, or logic components, we just haven't figured it out yet.  Many a time I have run across situations that have not been able to be explained by experts, yet they occur, and can be produced on-demand with the right set of inputs.  This is apparently one such situation.  There is a black box here that needs to be figured out, just hasn't been yet.

Main thing is that you are happy with the way your SHO is running, and we would like to continue receiving updates in the future to see if the fix is truly in place.

Z, any idea what the tieup is with the crank pressure sensor on the 2015s?  First I've heard of it.

Here it goes Starting in the 2015 MY, Ford will be using a Crankcase Pressure Sensor (CKCP) to detect a disconnection of the
fresh air hose. A disconnection of the fresh air hose would allow the discharge of crankcase vapor into the
atmosphere while the engine was under boost. The diagram below shows a schematic of the PCV system. The
CKCP sensor is installed in the fresh air hose. The fresh air hose has two connection points. The connection at the
AIS system is called the “Clean side” connection while the connection at the rocker cover/engine is called the “dirty
side” connection. The fresh air hose connects the Air Induction System (AIS) to the rocker cover to provide fresh, filtered clean air
into the crankcase as the crankcase vapors are evacuated. The PCV valve has a spring loaded, tapered pintle and
orifice that limits the amount of crankcase vapors that are inducted into the engine. The least amount of flow occurs
during idle when manifold vacuum is high. As engine load increases, manifold vacuum decreases which allow
more flow. Under boosted conditions, there is no flow through the PCV valve. As crankcase pressure increases,
blow by vapors get pushed through the fresh air tube into the Air Induction System (AIS) where they will be
inducted into the engine.

 

[StealBlueSHO]

So nothing should be contributed to the PCV, good to know. I was having a hard time drawing correlation but it was the only obvious thing I saw when reseating everything. Now I also reseated all the plugs as well and double checked all the connections to the maps, pcv, diverter valves, HPFP...

Here are the datalogs before and I after I reseated everything... before I was consistently hitting .86 AFR in first gear with some good spikes on the STFT.. afterwards I am able to keep LAMBSE of .80 through the entire run consistently.

I had run several different tunes some of which have a heavier load that show similar results of before not keeping a steady .80 AFR and then being able to..

 

[SHOdded]

Here's additional info from the OBD manual, hope this clarifies some things ...

Will look at your datalogs later today, StealBlueSHO.