Incorrect AFR at WOT Help!!

[curry67]

i have seem to be having problems with my o2 sensors aswell but i also have a knock issue so seeing your logs with 0 a max makes me depressed lol

[SHOnUup]

Datalogging, great for pinpointing issues gone wrong.

Rich

[AJP turbo]

i have seem to be having problems with my o2 sensors aswell but i also have a knock issue so seeing your logs with 0 a max makes me depressed lol

Fix your O2 sensor and go from there...these systems are so complex and dependent of other things u could have a multitude of things going on...for instance there are spark and fuel modifiers for lengths of time spent at various afr's....so if the afr is at a certain amount for so long it may see fit to modify spark or fuel. These compensations will be on top of base tables......fix the sensor as I thought we identified that issue at least earlier....I'm losing track..can remember if that was u or brewer

[curry67]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

[FoMoCoSHO]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

My AFRs randomly go to zero and both cars behaved the same.

[curry67]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

My AFRs randomly go to zero and both cars behaved the same.

so it going to 0 randomly for a few seconds is ok?

[AJP turbo]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

Sometimes data stream can get disrupted  and you will see 0 for a split second but it shouldn't happen very often....So if it went to 0 a few times then I don't know if I would say It appears to be working ....Doesn't sound good...I forget, did I look at one of your logs?

Just saw your new post....But NO! a few seconds is not ok....A tiny blip is the data stream being lost

[FoMoCoSHO]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

Sometimes data stream can get disrupted  and you will see 0 for a split second but it shouldn't happen very often....So if it went to 0 a few times then I don't know if I would say It appears to be working ....Doesn't sound good...I forget, did I look at one of your logs?

Just saw your new post....But NO! a few seconds is not ok....A tiny blip is the data stream being lost

AJP's explanation is what I have experienced running Torque, Dashcommand, OBDLink, etc......

[curry67]

https://drive.google.com/file/d/0BzPC7uX6FB_AUkZtV01FNzVQWU0/view?usp=sharing

[AJP turbo]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

Sometimes data stream can get disrupted  and you will see 0 for a split second but it shouldn't happen very often....So if it went to 0 a few times then I don't know if I would say It appears to be working ....Doesn't sound good...I forget, did I look at one of your logs?

Just saw your new post....But NO! a few seconds is not ok....A tiny blip is the data stream being lost

AJP's explanation is what I have experienced running Torque, Dashcommand, OBDLink, etc......

My old mustang was terrible, I think because of the cave man processor..The more items you log the worse it is. SOme PID's take more memory or something like that....I think its like bandwidth...SOme PID's require a lot of it...Or sampling rate I dunno....I notice better quality logs when I reduced the amount of paramters I log

[curry67]

Cave man sensor lol?

Sent from my SM-N910W8 using Tapatalk

[AJP turbo]

cave man processor in the older ECU's

[ecoboostsho]

Got some new fuel from different top tier brand knock as high as 7 now. The afr2 went to 0 a few times bit otherwise it appears to be working.

Sent from my SM-N910W8 using Tapatalk

Sometimes data stream can get disrupted  and you will see 0 for a split second but it shouldn't happen very often....So if it went to 0 a few times then I don't know if I would say It appears to be working ....Doesn't sound good...I forget, did I look at one of your logs?

Just saw your new post....But NO! a few seconds is not ok....A tiny blip is the data stream being lost

AJP's explanation is what I have experienced running Torque, Dashcommand, OBDLink, etc......

My old mustang was terrible, I think because of the cave man processor..The more items you log the worse it is. SOme PID's take more memory or something like that....I think its like bandwidth...SOme PID's require a lot of it...Or sampling rate I dunno....I notice better quality logs when I reduced the amount of paramters I log

You would be correct. Certain PIDs do indeed return more information (multiple bytes) where as others simply don't need the resolution and use less bits...

[kskrew4life]

Has anyone else notice 5+ kr at cruising speed while on cruise control? under WOT kr is -4 to =1 (which is normal) odd that im seeing knock at cruising since not altof load is on the engine

[SHOdded]

Running premium fuel?