When you say HP Tuners is 'reporting' 19.xxx. Is that a number reported in a BRAF Correction graph?

If you haven't set up a correction graph used to log dynamic airflow at idle, then follow this link giving you the formula and PID's to capture during a log (idle log only from ambient on startup up to max operating temp). This graph will log the 'correction' numbers from the time the engine is started cold (ambient) until the engine reaches operating temperature while idling in Park. The average correction number (dyamic airflow) will populate each cell in the graph table as the engine warms while idling.

https://ls1tech.com/forums/pcm-diagn...eo-guides.html

Once all cells are populated copy the numbers from the graph (log) and paste them to the BRAF table. One set of numbers for PN (park/neutral) idling and another set of numbers while in gear idling (A4 -auto). This will require at least two logs since the engine has to be started cold for each log (Park and Gear).

The values populated in each cell at each temp level is average dynamic airflow where TPS voltage is less than ( < ) .05.

Why .05? Because that is the maximum range in voltage your TPS should read after setting the TPS (zeroing the TPS to 0 KOEO). Anything > .05 means you are not idling and your throttle position is at a percent greater than zero (throttle position percent). For example: with KOEO my TPS reads from zero to .04 volts at zero percent throttle position. Just barely touching the throttle pedal changes the throttle position percent to something greater than 0 percent and volts increase as well.

The correction numbers you want are those when the engine is idling, You don't want dynamic airflow values from throttle positions at any percent greater than zero. You want idle numbers.

Perhaps those high dynamic airflow numbers you are seeing are legitimate numbers but not numbers you will see at idle.

 

In your log:

When the engine is idling at 731 RPM at 205 F, dynamic airflow is 7.56 g/s.

You are not logging throttle position (SAE) TPS, so assume throttle position percent is at zero in Park.

When the engine is NOT idling at 1510 RPM at 205 F, dynamic airflow is 16.55 g/s. You are not logging throttle position (SAE) or MPH so can't determine if Parked revving the engine or moving in Gear. Obviously dynamic airflow will be greater at 1500 RPM because the throttle position percent is greater then zero than at 750 RPM when engine is idling and throttle position percent is at zero.

If after several logs on different days, the average dynamic airflow at 205 F is approximately 7.5 g/s when idling Parked then that is the number that should be entered in the P/N row in the 205 Temp cell in the BRAT table ([ECM] 12084).

Both of these links support this observation. This procedure (BRAT Correction) is used for all temp cells in this table for both rows (P/N and Gear). Start cold and log up to operating temp for all temps cells for both rows (two separate logs). Set hits over 50. Average hits over 50 for each temp cell. If the correction cell doesn't report a number (blank), then you didn't get over 50 hits as the temp rose from the active temp cell to the next higher temp cell.

https://ls1tech.com/forums/pcm-diagn...eo-guides.html

 

When you say HP Tuners is 'reporting' 19.xxx. Is that a number reported in a BRAF Correction graph? Yes, that is the # being reported in the graph at the end of the idle test.

KFX-I'm just now updating my tune with the information you provided, and I'm about to burn it in right now. Will post back in a minute.

 

can you post your tune file

 

Here is the current tune, and the LAST log file that I did. Please note engine was HOT as I had to start it up to move it into the shop, and I wanted to see how well it would work with the last updates that KFX sent me.

As you can see from the log... It is now reporting #'s in the "8" range when I do the BRAF test, with the #'s that KFX gave me... and.... I think I see the problem..... watch the TPS voltage... It keeps dropping to "0" during the run... So, what happens when TPS voltage drops to "0" during a BRAF log??????? That might be the problem... Watch the log and you will clearly see TPS voltage drop to "0" and sometimes it just stays there... This is a BRAND new TPS from Rock Auto... But I guess it could still be bad.... Let me know what you guys think. If that's the REAL problem, I will purchase and install a NEW TPS tomorrow, and then try the BRAF log again.

Also.. Watch how LOW the spark advance is.. I was previously trying to reduce idle spark advance because I thought that was the problem..

*Please note it is 9:12PM here and I went to a business dinner and I'm on 7 Margaritas as I type this. Forgive me my typing errors.. I promise tomorrow morning I'll post another BRAF log and will be coherent at that time.*

 

My apologies.. Here is the log showing the TPS voltage dropping to "0" during an idle BRAF log...

 

WOW! I just clicked on the log file I posted while on my desktop.. It opened up the scanner, but is NOT showing the majority of the graphs I was using when I actually did the log.. Now I understand why you guys can't see what I'm seeing on my end... The scanner that populates from the log I posted is NOT an accurate representation of how it appears on my laptop... WTF????? Why does it not populate EXACTLY as I can see it on my lap top? I guess..... this is why using HPT is so difficult... You guys CANNOT see exactly what my log screen shows me. Regardless, it's TPS % that is dropping to "0" throughout the idle period on the last log I posted.. Could that be what is causing all of my issues? I guess the good news is that the info that KFX provided is at least showing me some "fair" numbers for the 198 cell. Much better than the crap-shoot #'s I was getting before.

 

ok, look at your timing in the main table and idle table 1200 to 1400 is a big jump in timing and 1400 to 1600 is HUGE. It cannot jump like that. The car will want to take off. also, in the spark section where it says base, change the speed and throttle position to match mine. all those settings actually need to match mine. in the idle section, fix your idle rpms....some go down, up, then down. They should taper down as temp increases.in your throttle cracker table you have a huge jump in airflow from 4mph to 8mph.

have you looked at your idle airfllow table? its not linear. huge jumps and all over the place. fix that. are you using electric fans operated with the computer? if so, you arent commanding enough air added. If you arent, you need to zero that out! go look at yout ve table and compare to mine. you have a large jump in the low rpm areas....

 

if you fix the above items I mentioned, you should be better off. You can use most of my settings. Keep in mind that my timing table is a three bar so you’ll have to estimate in between. Too bad you aren’t near me, I could fix this for you pretty quickly.

 

IMO your TPS is recording voltage accurately at about .47 volts as it should during idle.

It's your throttle position percentage that fluctuates between zero and .04 percent as it should during idle.

You have a PM explaining this.

 

Okay, I have not made the changes that KFX recommended yet but I will do those and then post an afternoon log.

I did another log this morning with the current tune, and posted the log. It's back to 19's in the 198 cell in the log.

I will make the changes that KFX points to, and make another tune and log for this afternoon after it has cooled off all day.

 

Here is the current tune I'm about to burn into the car. It has the "KFX" updates. Will do another log this afternoon after the car has cooled off completely.

 

I *attempted* a full BRAF log this morning.. Half way through, my laptop decided it was the perfect time for a Windows 10 update and promptly ENDED all of my logging. 35 minutes later, the laptop is powered up but now with a bunch of new Microsoft CRAP that I don't need. I have permanently disabled all future wind-NOS! updates.

I will try another log after the vehicle sits all day today and cools off.

 

You can start the car and log just temps 154 to 198 to see if Idle Desired Airflow is closer to Dynamic Airflow due to changes adopted from Kfxguy. If the dynamic airflow values reported in the log are close/closer, then insert the new values and interpolate the rest. Then see what results you get tomorrow after a cold start or even later today. It's not an all or none scenario.

If you start the car today the BRAF correction graph will immediately start in the cell that corresponds to the current engine coolant temp. But the starting cell value might remain blank as engine coolant rises and moves the the next temp cell. Why? Because that cell didn't meet minimum cell count before moving to the next temp cell.

Tip: disable power saver so it doesn't shut down or go to sleep on you while logging.

 

good job for finishing this thread so we have a complete start to finish understanding of what you did or didnt do.