Torque Module Solution!!!!

[thewhip]

It will also work for crusing of u plug in ur timing and apc it shld be really close

The 6.2L has different RPM ordinates, can you make a duplicate with those as I went to change the RPM and its locked on graph and final trq/nm numbers.

I'm supercharged so I'm going to try and back into the DD table. From what I see, add your timing in and current G/cyl.

One thing to note, the 6 speeds use engine torque on DD while 8 speed seems to use axle torque. Would be great to have one more line with axle torque after nm.

[jarrah]

here is another file I use while tuning those di engines in sheet one u will have to enter ur injector size and current fuel rail pressure and cam durations in one of the other sheets u have to put ur AFR commanded and ign timing. this tool will show u based on ur cam and fuel rail pressure when u will be out of fuel and will also solve for the required SOI and will highlight in red the concerned areas.

play with it and let me know wat u think I also added the apc and map torque tables now u can change the rpm cells too.

there is a throttle tab still not enabled since I am still getting the ecu algorithm figured out I am so far within 2% error of wat ecu commands at idle and cruising I will enable it ASAP it will help u to get the car to idle perfect regardless of cam size




SOI Calc.xlsx

[GHuggins]

One thing I've always had problems with on these is the idle timing - even with the ve dialed in and after playing with dd and so on sometimes I wind up with what I consider to be too low of ignition timing due to the torque demand pulling it down... I've even substantially lowered the idle areas of the airmass tables and still had issues... Will your idle setup fix things like this?

[jarrah]

Yes i get those to idle all the time at 15 to 20 degrees no issues

[schpenxel]

Lots of winning going on in that sheet

[Higgs Boson]

would love to be able to edit some of it or get an LT4 version specifically. the graphs are giving negative power values with LT4 data.

[thewhip]

And possibly the 6.2. Ideal world, 5.3, 6.2 and LT4, that covers the 3 fields.

Jarrah, still wrapping my head around all the info but incredible work brother!

[jarrah]

In the last file i posted u can edit RPM and copy paste ur torque coefficients from ur tune file another thing to watch for is that in my excel sheet i am only calculating the 0 row in the torque coefficients therefore if ur wot say is 7.5 in the vvt tables copy the 7.5 row from torque coefficients and paste it in the excel sheet in the 0 row also u can cross check in the log u will see that the calculated values matches ur log immediate engine torque .....


Idle tuning hint: since i am still working on it....log ur desired throttle area% and desired throttle airflow wat happens is if u have high opening ur timing will be low in order to control ur idle speed if u lower ur throttle opening timing will be higher to maintain idle speed

[Higgs Boson]

Idle tuning hint: since i am still working on it....log ur desired throttle area% and desired throttle airflow wat happens is if u have high opening ur timing will be low in order to control ur idle speed if u lower ur throttle opening timing will be higher to maintain idle speed

I am pretty sure most know that, but many are having issues altering the idle torque values to correct it since there is no more Base Idle Airflow table. Personally I haven't had an issue with idle yet but I am sure it's just dumb luck.

[GHuggins]

Yes, it's the desired torque or airflow at idle that I fight with... I can make things better, but never "perfect" or rather how I would like them to be... Surging at idle with O2 switching is another thing I'm hoping this helps to address because the usual switch points addressing doesn't seem to "entirely" do the trick anymore - I've had to lower idle timing down around 4 to 5 degrees to keep this from happening...

I wish there was still a min airflow table or even a desired airflow table like the bosch or ford ecus have, but I've yet to see one?

I know I can change etc scaler to "alter" airflow, but not the ideal solution...

[jarrah]

The zero pedal plus maf and ve and torque coefficients solve for idle and throttle opening i can get them to idle similar to older gen 4 in reality u can solve for the torque required at idle and plug in the numbers and it will work as old gen4 this is wat i will be posting soon ....i still believe hptuners r missing more throttle tables and some other tables i am preparing a list for them to add

[GHuggins]

0 pedal? I assume your referring to the 0/0 spot of the dd table for it's torque setting? Yes I play with that cell to get idle timing and throttle where I find it idles and runs the best... I must not be changing the torque model enough?

I did find it interesting playing with the tables you posted that I could smooth and change every table except for the airmass table and the torque model almost wouldn't change... I also found it interesting that although I would change say a 2800 zone - it would more so alter the areas around it than it would the 2800 rpm area - also thought it was interesting that I could make a big change (x1.2) - might not do much, then do another (x1.03) and bam - it might go through the roof in this one spot, Sooo really looking forward to being able to change the line itself and it back calculate the coefficients If you might be working on that

[Ben Charles]

would love to be able to edit some of it or get an LT4 version specifically. the graphs are giving negative power values with LT4 data.

Just had an opportunity to play with the sheet... I am using another program beside Excel but I also ran into this issue..

Nicely done, when I get more time I plan to experiment with it.

[jarrah]

Guys the last file i posted u can change the values for the lt4 as well as the rpm values i tried and i get positive values for the lt4 i also verfied with one of the lt4 logs here on the forums.....

there r some missing tables that allows for the error between measured map and maf and caluclated Using the inverse apc and map modules if we have access to these tables we can simlpy max them out and ecu reverts to measured only and wont fight itself

[GHuggins]

So are you saying that if we had access to these tables that we wouldn't need to adjust the torque model or that we would only need to put in the maximum that it would see in the torque model and then it would follow "actual" map and pedal more fluently?

[Keith@HPTuners]

Let's please not derail this thread from jarrahs solution. For the HPT implementation, please discuss here: http://www.hptuners.com/forum/showth...y-now-in-beta!

[thewhip]

here is another file I use while tuning those di engines in sheet one u will have to enter ur injector size and current fuel rail pressure and cam durations in one of the other sheets u have to put ur AFR commanded and ign timing. this tool will show u based on ur cam and fuel rail pressure when u will be out of fuel and will also solve for the required SOI and will highlight in red the concerned areas.

play with it and let me know wat u think I also added the apc and map torque tables now u can change the rpm cells too.

there is a throttle tab still not enabled since I am still getting the ecu algorithm figured out I am so far within 2% error of wat ecu commands at idle and cruising I will enable it ASAP it will help u to get the car to idle perfect regardless of cam size




SOI Calc.xlsx

Jarrah,

I wasn't able to change RPM on the APC table, just the MAP table, but then I couldn't change the airmass, spark, etc. Any chance you can update that?

[jarrah]

Hi guys can u check now

[jarrah]

I am really happy with the results i used my calculator on a twin turbo 650whp truck built and tuned by my shop....i got the truck to have the calculated desired airmass and map withen 2% error from ecu calcualtions and the truck drives so good shifts perfect pulls hard throttle opening matches desired perfectly drives way way better then stock trucks i added some equations to my table where u plug logged data vs desired and calculates the error and it will recalcualte ur coeffecients

[Ben Charles]

Jarrah it must be the program I'm using (excel format) but when I input in the stock lt4 tq coifficients I get "#VALUE"
Or ERROR.... I'll see what actual excel does on my home PC