Help me read my SCT Data log A/F Wideband

[07VistaChicago]

So I installed my wideband and did some data logging. Everything seems to be making sense and the numbers seem good except some small spikes that worry me. Are these just data logging anomalies? Anybody know? The big spikes are normal open and close of the throttle spikes, but I am interested in the little small spikes (4 of them).

Also to add, I did back to back runs in two different gears and the small spikes don't show up in both graphs in the same places. Leading me to believe they are anomalies and my average A/F is 11.875..

Anybody have photos of their wideband data logged?

 

[one eyed willy]

looks normal, it will always spike as you let off the gas. if it starts to climb then you need to get out of it!!

 

[07VistaChicago]

I am worried about the little spikes that go to about 12.2, are those just anomalies in the data acquisition or error in the wideband, or something to be worried about?

 

[stang67gt]

Was this done on a dyno or a back road?

 

[01yellerCobra]

How far off were the spikes in the second run? If they were close to the first run I'd look at the MAF transfer in those spots and make sure the numbers aren't too far off. If the numbers are ok it's probably an anamoly. I've had spikes in the middle of datalogging showing 10K rpm.

 

[07VistaChicago]

They weren't even close or had the same amplitude or anything. That's why I was thinking it was an anomaly. I did a 3rd gear and 4th try to duplicate and magnify the data points in the 4th run. The 4th run didn't show spikes in the same areas.

 

[07VistaChicago]

Was this done on a dyno or a back road?

Done on a closed back road. Lucky to have one close that is in decent shape.

 

[07VistaChicago]

Added photo highlighting the spikes I am concerned with.

 

[07VistaChicago]

Anybody have any insight?

 

[05stroker]

Dont know much about reading datalogs but, my experience with returnless systems is there will always be some small spikes here and there. Just my .02.

 

[lito]

Is all cool, do not loose your sleep on this. That is a nice flat line, too flat if you ask me (as there are more variations than you got registered) but nothing else you can do with that LL version that is tooooo slow and sketchy.

All is good.

 

[07VistaChicago]

Thanks Lito!!! Yeah it is extremely flat.