Data Logs! Post them here.

[mid_life_crisis]

Originally Posted by steve99

Have a look at your throttle position when afr is 15 its zero, the ecu shuts off injectors on overun to save fuel this is normal

I understand about lift off, but there are several points where throttle is 5,6, almost 10.

[steve99]

Originally Posted by mid_life_crisis

I understand about lift off, but there are several points where throttle is 5,6, almost 10.

also look at the commanded AFR (what ecu is asking for) and the measured afr, sometimes the ecu is asking for AFR arround 15 in low load light throttle, looks pretty normal to me.

[mid_life_crisis]

Originally Posted by steve99

also look at the commanded AFR (what ecu is asking for) and the measured afr, sometimes the ecu is asking for AFR arround 15 in low load light throttle, looks pretty normal to me.

You've done a lot more of this stuff than I have. I'll trust your judgment, and thanks for the patience.

[Wayno]

Originally Posted by JonAvalon

Yea I had a feeling someone would mention engine load. I put it back on yesterday, some of the stuff I left in there from testing but I'll remove them. Here are logs from yesterday with engine load if you want to take a look, no pulls just regular driving.

http://datazap.me/u/jonavalon/aftern...ta=1-3-4-10-11

http://datazap.me/u/jonavalon/aftern...log=0&data=1-3


I honestly didn't know that, good to know. I've been doing countless research and that didn't cross my mind. I hope I'm not trying to come across as a total noob about this stuff. I'm really trying to learn about this; what the data means, what I should watch out for etc. But I think I'm getting slowly a decent grasp of it.



Yep I've been looking at your thread for a while, great stuff. I've been trying to figure out how to do all of that in romraider.



Thanks

Don't look at the thread, look at the roms. Compare them to 2.06.

[nickmerronesucks]

Originally Posted by steve99

sounds like a hardware problem ie intake or exhaust leak, dirty maf/map sensor ect. melted wiring ect.

i would talk to shiv, turbos running lean not good

Welp turned out to be that Evap line that I clamped..guess clamping that blindly was a bad idea.

[el-92]

http://datazap.me/u/el-92/3rd-gear-8...-2-3-7-9-12-13


data log a point in the right direction 3rd gear pull 91 octane

[JB86'd]

Originally Posted by el-92

http://datazap.me/u/el-92/3rd-gear-8...-2-3-7-9-12-13


data log a point in the right direction 3rd gear pull 91 octane

get rid of the vvt intake and exhaust, kc learned and log IAM, FLKC, and Knock Correction. That will give a better indication of how your car is running.

[JB86'd]

first hard runs with the new JDL UEL header and OFT 2.06. 91 oct.

http://datazap.me/u/joshbustos86/jdl...1-3-8-10-11-14

Still running 11.25 AFR upper rpms, guess that's the nature of the OFT tunes and my car.
but damn do I love this combo.

[Wayno]

Originally Posted by JB86'd

first hard runs with the new JDL UEL header and OFT 2.06. 91 oct.

http://datazap.me/u/joshbustos86/jdl...1-3-8-10-11-14

Still running 11.25 AFR upper rpms, guess that's the nature of the OFT tunes and my car.
but damn do I love this combo.

Attachment 118364

It's richer than 11.25

You need to copy the MAF scale from Stg1 tunes in my thread.

And run DI to 7000, so you don't get a LTFT difference of 4 at 5200rpm.

[JB86'd]

Originally Posted by Wayno

It's richer than 11.25

You need to copy the MAF scale from Stg1 tunes in my thread.

And run DI to 7000, so you don't get a LTFT difference of 4 at 5200rpm.

so these are the maf scaling values in the stg 1 tune (which look to be the same as your stg 2 tune) compared to my UEL stage 2 tune. Are these the correct changes to make?



also, not quite sure how to run DI to 7000. How important is that?

[Wayno]

Originally Posted by JB86'd

so these are the maf scaling values in the stg 1 tune (which look to be the same as your stg 2 tune) compared to my UEL stage 2 tune. Are these the correct changes to make?

Attachment 118382

also, not quite sure how to run DI to 7000. How important is that?

Yes, it's correct.

Also copy the injector ratio tables. They have re-scaled axis.

[JB86'd]

Originally Posted by Wayno

Yes, it's correct.

Also copy the injector ratio tables. They have re-scaled axis.

Got it, thank you. How exactly does changing those injector ratio tables affect AFR/LTFT? In other words when I datalog this new tune, what changes should I be looking for that weren't due to changing the MAF scaling?

[Kodename47]

Originally Posted by Wayno

And run DI to 7000, so you don't get a LTFT difference of 4 at 5200rpm.

Any reason you chose to run full DI until 7k RPM?

[Kodename47]

Originally Posted by JB86'd

Got it, thank you. How exactly does changing those injector ratio tables affect AFR/LTFT? In other words when I datalog this new tune, what changes should I be looking for that weren't due to changing the MAF scaling?

It shouldn't change anything, however there is usually variance between the injector systems so you may see a slight change in AFR.

RE: LTFT, if what Wayno is saying is correct, I have also seem similar recently. It was believed that LTFT was universal however I have seen a car that LTFT changed the moment it went from PI only to DI only at the same RPM range (idle). I'm not talking insignificant either, it went from 0% to -40%!! Admittedly the car had a hardware issue, but that's a saved LTFT.