Looking For Opinions And Advice

[Cringer]

Sorry I disappeared for a bit.

Along with work and stuff keeping me away from tinkering with the truck I have been
watching some of your videos. I subscribed to your channel and it is consuming what little
extra time I have. Great stuff by the way!

Good to hear! I hope it helps you out.

[WEC]

I downloaded your scanner stuff and the MAF assisant. In the channels your EQ ratio (sae) is greyed
out. I am using the AEM through the pro link cable. Will I need to change that to log?

[Cringer]

I downloaded your scanner stuff and the MAF assisant. In the channels your EQ ratio (sae) is greyed
out. I am using the AEM through the pro link cable. Will I need to change that to log?

Yes you will need swap out the channels where appropriate.

[WEC]

So this is the VVE table and Airflow. Looks better so what would be the next area to
work on?
Screenshot 2023-06-05 212224.png
Screenshot 2023-06-05 212316.png

Also latest tune..

[Cringer]

So this is the VVE table and Airflow. Looks better so what would be the next area to
work on?
Screenshot 2023-06-05 212224.png
Screenshot 2023-06-05 212316.png

Also latest tune..

That is a very sensual looking VVE table bro!

Are there any drivability issues or specific things that are bothering you with the current tune? If so, tackle those next.

[WEC]

Thanks.. I think

So the shifting seems smooth but I would like to tinker with shift timing. I would also like to
get a better or faster downshift with throttle increase. I still get a lag and that cool 4 barrel
carb like sound before it downshifts. Only time it seems quick on the DS and RPM response
of course is at WOT.

I do notice with this current tune I seem to have lost some horsepower. May be just because
it is smoother.

Here is a log from a drive after loading in the current tune.

[WEC]

That is a very sensual looking VVE table bro!

Funny, I get it now... I am slow but eventually I get there.

[WEC]

Cringer I watched a couple of your transmission videos. Even though I have
the 8 speed I did a couple of the changes from the second video.

Shifting improved.

[Cringer]

Cringer I watched a couple of your transmission videos. Even though I have
the 8 speed I did a couple of the changes from the second video.

Shifting improved.

OK cool! I have never messed with the 8 speed stuff. I know its a different beast though...not sure much 6sp stuff applies to 8sp...be careful.

[WEC]

Just looking at the things that match up. Shift time and what not. Not going to do much more
without more info.

The truck is driving good but still needs more.

I have what may be a dumb question, should I be resetting LTFT and STFT after every engine tune
update? Also how do you do that? Have not done this yet during any tuning and wondering if this is
messing up any new data.

[Cringer]

Just looking at the things that match up. Shift time and what not. Not going to do much more
without more info.

The truck is driving good but still needs more.

I have what may be a dumb question, should I be resetting LTFT and STFT after every engine tune
update? Also how do you do that? Have not done this yet during any tuning and wondering if this is
messing up any new data.

You cannot reset stft.

Long terms can be reset via the Scanner under the Vehicle Controls and Special Functions button. It would be wise to reset these after making MAF or VVE changes. You may consider temporarily turning off LTFT if you plan to do more airflow tuning over the next few days, weeks, months. Or most people leave them disabled.

Edit: There may be other reasons to reset LTFT (like EOIT changes) or other things that impact fueling, but airflow tuning is the most common reason.

[WEC]

You cannot reset stft.

Long terms can be reset via the Scanner under the Vehicle Controls and Special Functions button. It would be wise to reset these after making MAF or VVE changes. You may consider temporarily turning off LTFT if you plan to do more airflow tuning over the next few days, weeks, months. Or most people leave them disabled.

Edit: There may be other reasons to reset LTFT (like EOIT changes) or other things that impact fueling, but airflow tuning is the most common reason.

Thank You!

[bk2life]

this is a great thread..
thanks to cringer and wec.
im new to gen 5 and have the same questions, so this is a great learner thread here.

[WEC]

So free time is not something I have a lot of these days. So when I try to block out some
tuning time I seem to spend a lot of it just trying to get the scanner to log what I need.

It is the small victories I have to appreciate like the last one. I have been banging my head
on the dash trying to get the scanner to read the wide band via the serial port. After trying
everything I could find in the forum, I finally found the fix. Someone mentioned re syncing
the tuner. First attempt failed but I just did it with the tuner hooked up to the laptop but not
in the truck. After I re synced with the computer in the truck and connected it came to life.

When I go to log and the AEM disappears I just re sync and it come to life.

Now that I can log the wide band I am working on getting my data to work on Cringer's
assistants.

Would you take a look at this log and tell me what is going on with the MAF? Some funky numbers that I
am not sure how to tune with.

[cadillactech]

What is looking weird in the MAF?

Why are you only logging one bank of fuel trims?

[WEC]

What is looking weird in the MAF?

Why are you only logging one bank of fuel trims?

Yes MAF and I don"t know why.

[WEC]

I added the others in. Didn't even notice.

[WEC]

Ran this short log today. DFCO, MAF, COT and readiness disabled. Special functions = exhaust and intake cam angle = 0

[WEC]

Lock the cam to a 0 position and dial it in. Then using Cringer's tool you can edit the tables for variable cam movement. Just a FYI you really need to have your density table dialed in before making any of these corrections. If you're not interested in the time to dial in the density table just keep in mind your VVE table will probably vary up to 10% pass to pass so just get as close as you can. You can probably highlight the whole table and smooth it out just to begin with.

Two questions sir, does selecting cam desired position 0 to on in special functions accomplish this and the only Density table I have found is the cluster output. I assume this is
not what you were referring to?

[WEC]

So after pasting special by % from any of the VE graph's and smoothing I get something like this
after calculating coefficients. Frustration level rises!!!!