Data Logs! Post them here.

[Tor]

Originally Posted by bababooey

no stock intake with k&n, then perrin inlet tube. other than wasting a little gas, is running a bit rich terrible?

from what ive read it seems running too lean (too little fuel) can be dangerous, while rich (too little air) just leaves a little power on the table. correct me if wrong, i may have those backwards. my car seems to run rich from prior feedback from Steve, Im trying to understand why and if tinkering with the maf scaling could correct it.

There is nothing unsafe about it. If you are happy with the way the car runs and the power it makes, and you don't want to spend months educating yourself on the matters of an ECU then leave it as it is.

If you don't mind turning tuning into a hobby and spend countless hours reading and tinkering, then yes it would probably benefit from a MAF scaling. Expect to do a lot of other adjustments afterwards.

A quick fix might be to reduce the values above 3.2 volt in your MAF scale by 4%. Before doing so, do a few more logs with 50 miles apart and check that your LTFT is stay around the 1.56 value it's at now. If your LTFT jumps around it won't be a good solution.

[Nobunnyhere.86]

http://www.datazap.me/u/nobunnyhere8...n?log=0&data=1

Here is my newest log, not the best so bare with me.

This is with the New 3.0 EL 91 tune shiv has sent to me. If you seen anything that can or should be looked at let me know. Thanks!!

[solidONE]

Originally Posted by Nobunnyhere.86

http://www.datazap.me/u/nobunnyhere8...n?log=0&data=1

Here is my newest log, not the best so bare with me.

This is with the New 3.0 EL 91 tune shiv has sent to me. If you seen anything that can or should be looked at let me know. Thanks!!

http://www.datazap.me/u/nobunnyhere8...84-159-177-171

Going a little lean from 6500rpms and it started to pull timing. Try logging in 3rd gear with more consecutive pulls in the log. Your log cut off before it even hit redline.

[Nobunnyhere.86]

DATAZAP.ME is not opening right now, so I cannot load a new run I did today in 3rd gear to red line. Is there any other way to upload a run ?

[Tor]

I need a bit of help.

Can someone tell me why I have AFR command of 14.7 here?



Situation:
1) Driving in 5th at at 4000 rpm. Car is rolling with zero accelerator pedal input in OL.
2) I slowly feather in the pedal up to 48%, at 15% it changes to CL and at 26% back to OL.
3) As it changes to OL, AFR command jumps up to 14.7 with a load of 0.99 (in my POL table I have 12.14 at 4000 rpm/1.00 load).
4) As it passes through this 14.7 area, AFR goes up to 13.35 and it starts to pull timing, eventually dropping IAM.

http://datazap.me/u/tor/tor-2312-100...mark=7271-7275

Although the IAM drop is very slight, it's annoying.

Where is this 14.7 commanded coming from?

Thanks.

[Kodename47]

Originally Posted by Tor

Can someone tell me why I have AFR command of 14.7 here?

Although the IAM drop is very slight, it's annoying.

Where is this 14.7 commanded coming from?

A CL to OL delay possibly?

I really wouldn't worry about a drop of 0.02. That's less than 0.1 of a degree less than maximum at the most

[Tor]

Originally Posted by Kodename47

A CL to OL delay possibly?

I really wouldn't worry about a drop of 0.02. That's less than 0.1 of a degree less than maximum at the most

But even my CL Fueling Target Compensation has -1.5 at 4000 rpm/1.00 load, so I'm just wondering why 14.7?

The problem is not so much that it drops IAM by 0.02.

But as it continues to be lean and as load reaches 1.16 it gets -1.3 FLKC. The problem is that since it doesn't knock under WOT, I want to add more timing and don't want to create problems when driving at partial throttle.

[phrosty]

I've noticed the same thing on my logs. The car doesn't seem to actually target 14.7 CAFR during this time. Not really sure what causes it.

[solidONE]

Originally Posted by Tor

I need a bit of help.

Can someone tell me why I have AFR command of 14.7 here?



Situation:
1) Driving in 5th at at 4000 rpm. Car is rolling with zero accelerator pedal input in OL.
2) I slowly feather in the pedal up to 48%, at 15% it changes to CL and at 26% back to OL.
3) As it changes to OL, AFR command jumps up to 14.7 with a load of 0.99 (in my POL table I have 12.14 at 4000 rpm/1.00 load).
4) As it passes through this 14.7 area, AFR goes up to 13.35 and it starts to pull timing, eventually dropping IAM.

http://datazap.me/u/tor/tor-2312-100...mark=7271-7275

Although the IAM drop is very slight, it's annoying.

Where is this 14.7 commanded coming from?

Thanks.

I've seen this on my own car as well, or similar. At the beginning of a pull, after some above normal temps have been generated it will show 14.75 targeted even when actual AFR is nowhere close to it, nor the targeted AFR in the maps.

I have a feeling it has something to do with the secondary O2 sensor malfunctioning under those conditions. I've not really investigated, as it doesnt cause KC on my car, so I'm not 100% sure. Something related to heat the O2 sensor, I'm guessing.

[Tor]

Originally Posted by phrosty

I've noticed the same thing on my logs. The car doesn't seem to actually target 14.7 CAFR during this time. Not really sure what causes it.

It does go leaner but the it doesn't reach 14.7. It could be that it's not actually targeting it. The other Subaru guys can log "final fueling base" (see e.g. this thread on RR). Anyone heard of that for our cars?

There is a lot of tipin going on at the same time so maybe that could also be the reason actual AFR is not getting that high?

Originally Posted by solidONE

I've seen this on my own car as well, or similar. At the beginning of a pull, after some above normal temps have been generated it will show 14.75 targeted even when actual AFR is nowhere close to it, nor the targeted AFR in the maps.

I have a feeling it has something to do with the secondary O2 sensor malfunctioning under those conditions. I've not really investigated, as it doesnt cause KC on my car, so I'm not 100% sure. Something related to heat the O2 sensor, I'm guessing.

Which temp was above normal?

I have the secondary o2 sensor corrections disabled. But still I would be surprised if that would have influence on AFR command, since it has it's own separate corrections.

Looking at my logs, the only other places I ever have 14.7 is during overrun. At the beginning of a pull, where you come from off throttle, I suppose it could be a logging delay?

Thanks for your replies.

[chermo12]

Hi guys,

Still very new to tuning. Please if someone can help me analyze my log.
Mods: stock intake, catted header, catback exhaust. 2013/38k km
Tune: "v3.0 Stage 2 UEL 91-93"
I was really only worried about the adv multiplier going below 1.00.
Always have run 91 where (before this log) it went down to 0.34 a 0.54.

This log is when I switched to 94 and tried to do a 3rd gear pull. It helped bring it back up to 0.65 only.

http://datazap.me/u/fl4tbxr/sept-1-2...0?log=0&data=1

Is my engine prone to knock? Anything else look out of the whack??

[Tor]

Originally Posted by chermo12

Hi guys,

Still very new to tuning. Please if someone can help me analyze my log.
Mods: stock intake, catted header, catback exhaust. 2013/38k km
Tune: "v3.0 Stage 2 UEL 91-93"
I was really only worried about the adv multiplier going below 1.00.
Always have run 91 where (before this log) it went down to 0.34 a 0.54.

This log is when I switched to 94 and tried to do a 3rd gear pull. It helped bring it back up to 0.65 only.

http://www.datazap.me/u/fl4tbxr/sept...=0&data=1-8-12

Is my engine prone to knock? Anything else look out of the whack??

That is way too much knock. With the catted header you may be way better off flashing a stg 1 tune and taking it from there. The AVCS settings (variable valve timing) may be more suitable since there is still a cat. It will probably make more power too.

[steve99]

Originally Posted by chermo12

Hi guys,

Still very new to tuning. Please if someone can help me analyze my log.
Mods: stock intake, catted header, catback exhaust. 2013/38k km
Tune: "v3.0 Stage 2 UEL 91-93"
I was really only worried about the adv multiplier going below 1.00.
Always have run 91 where (before this log) it went down to 0.34 a 0.54.

This log is when I switched to 94 and tried to do a 3rd gear pull. It helped bring it back up to 0.65 only.

http://www.datazap.me/u/fl4tbxr/sept...=0&data=1-8-12

Is my engine prone to knock? Anything else look out of the whack??

If you IAM was getting down to 03 on 91 then id avoid running 91 on that tune , maybe run the earlier less aggressive tunes.


On 94 it looks acceptable, still some knock and its running rich, but looks like log was fairly soon after flashing ?? as the ltft at mid upper rpm is still 0.


Caniadian fuel seems worse than USA fuels from logs ive seen.


Apparently husky 94 is good

[steve99]

Originally Posted by Tor

But even my CL Fueling Target Compensation has -1.5 at 4000 rpm/1.00 load, so I'm just wondering why 14.7?

The problem is not so much that it drops IAM by 0.02.

But as it continues to be lean and as load reaches 1.16 it gets -1.3 FLKC. The problem is that since it doesn't knock under WOT, I want to add more timing and don't want to create problems when driving at partial throttle.

Maybe try reducing or zeroing CL to OL delay timers


"When the closed loop delay value is non-zero, this table will be used to determine the transition from closed loop to open loop and back again. When the base pulse width, ((2707.09/Injector Flow Scaling) * Engine Load (g/rev))), rises above the threshold in this table, the process to exit closed loop begins. The current delay value is a counter threshold for which the throttle threshold must be continuously exceeded (otherwise counter is reset to zero and CL to OL transition does not take place). When the base pulse width drops below the threshold (and below a predetermined delta), fueling will transition from open loop to closed loop.</description>"




https://forums.nasioc.com/forums/sho....php?t=1474186