LS1 Boost OS V2

They go by many names, P01, P59, VPW, '0411 etc . Circa 1999 to 2006. All VPW OBD2 PCMs.
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LS1 Boost OS V2

Postby bubba2533 » Wed Jul 21, 2021 2:12 am

V2 of the LS1 Boost OS

Updates:
1. Fixed a couple mistakes with the XDF
2. Separated the patch update from the base data incase someone wants to create their own base calibration.
3. Updated OS to limit user errors

Warning: This is development software and should be treated as such.

Current Features:
Expanded VE Table 15-375 kpa
Expanded Desired Open Loop EQ Ratio Table 20-340 kpa
Boost Spark Adder
Spark Cut Engine Speed Limiter
Spark Cut Launch Control Limiter
Launch Control Spark Adder
Timed Launch Spark Adder
Spark Cut Flat Foot Shift Limiter

Supported Operating Systems:
P01:
12212156
12216125
P59:
12587603

How to Upgrade to LS1 Boost OS:
1. Download & Install TunerPro Website Link
2. Download Attached File GM-P01-P59-checksum-plugin.dll (by: joukoy) and Move into \Documents\TunerPro Files\Plugins
GM-P01-P59-checksum-plugin.dll
(11 KiB) Downloaded 27 times

3. Download Attached XDF for the PCM & OS
P01:
12212156_LS1_Boost_OS_V2.xdf
(32.64 KiB) Downloaded 33 times

12216125_LS1_Boost_OS_V2.xdf
(35.54 KiB) Downloaded 30 times

P59:
12587603_LS1_Boost_OS_V2.xdf
(35.5 KiB) Downloaded 35 times


4. Save a Copy of your Current Tune & Select a Base Tune for Patching (NOTE: HP Tuners/EFI Live tunes cannot be Patched)
5. Open TunerPro & Select the XDF / Base Tune
6. Open Boost OS Patch and Click Apply Patch and then File -> Save Bin As
7. Apply Base Data Patch OR review and change all XDF parameters for your application. Engine will not run without appropriate data for all parameters.
8. Flash using PCM Hammer (NOTE: OS and Calibration Flash Required Once, and only Calibration Flashes after)

If you are interested in what new features or fixes are being tested I have a development thread you can look at LS1 Boost OS - Development.

I've put a crazy amount of time into this, so I hope people other than me will use it. If you feel like helping out and want to support future updates consider joining my Patreon
LS1 Boost OS: If you have Questions about the current release post Here. If you have feature suggestions post in the Development Thread

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Re: LS1 Boost OS V2

Postby ShorTuning » Wed Jul 21, 2021 8:41 am

Titties!

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Re: LS1 Boost OS V2

Postby Phoenix » Thu Jul 22, 2021 3:09 am

I can't wait to try this out! Could you please give a little more detail on step 7?

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Joined: Wed Apr 11, 2018 8:50 am

Re: LS1 Boost OS V2

Postby bubba2533 » Thu Jul 22, 2021 6:44 am

Phoenix wrote:I can't wait to try this out! Could you please give a little more detail on step 7?

Yeah. I'll give it a shot.

So I wanted to give some sort of base map, but with the limitations of TunerPro it is very generic and will need tuned. But if you want to create your own base map (it will likely be much closer) you will need to spend some time filling out all the tables in the XDF with good/reasonable data.

The biggest issue is the VE table as there is a significant portion that is extended from the stock VE table in my new OS. You can the stock VE table and then extend the values into boost with a simple multiplier. I started on a excel sheet to do the work for you. It's still not perfect, but you can tweak/tune from that and it should be much closer.

The next issue is EQ ratio table. Again it is extended in the new OS and in my spreadsheet it's extended with a simple multiplier.

The rest of the parameters are pretty easy to update, but all of them need to be filled out even you don't plan on using them. Reading of the name and description of each of them should be enough to fill them all out.

Well I finished it up, so let me know if this makes sense. Basically paste in your stock VE/EQ table and it outputs an scaled/extended table in another sheet.
Boost OS Base Table Helper.xlsx
(33.29 KiB) Downloaded 18 times
LS1 Boost OS: If you have Questions about the current release post Here. If you have feature suggestions post in the Development Thread

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Re: LS1 Boost OS V2

Postby hsv08 » Thu Jul 22, 2021 9:44 pm

Is it possible to add a scaler to suit the map sensor sensor type?

1 bar
2 bar
3bar
Options?

That way if using a 2 bar you only need to map up to 205kpa instead of having to populate all the way to 375kpa?
As I assume your only scaling the 0 - 5v value over 375kpa of load points?

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Joined: Wed Apr 11, 2018 8:50 am

Re: LS1 Boost OS V2

Postby bubba2533 » Fri Jul 23, 2021 12:57 am

Very good point, I guess that's something I forgot to cover.

You will need to separately update the scaling for the MAP sensor if it is changed. The MAP sensor you choose will dictate what those values are and in turn will scale the 0-5 Volt MAP sensor input appropriately.

Using the formula:
MAP (kPa) = ( AD_Count/255 * MAP_Sensor_Scale_Factor) + MAP_Sensor_Offset

The stock MAP sensor values for a 1-bar sensor are:
MAP Sensor Scale Factor- 94.43 (kPa/AD)
MAP Sensor Offset- 10.33 (kPa)

AD_Count- the digital 8 bit value (0-255) the PCM converted the 0-5 Volts into.

Here is the max the above 1 Bar sensor can read:
1 Bar = (255/255 * 94.43) + 10.33 = 104.76 kPa

So if you are running the above 1 Bar you only need to tune the 15-105 kPa parts. And for any other MAP sensor you can plug in the values and determine the maximum reading from the MAP sensor. Other XDF's already have these values defined, so I may not need to add these to mine if a combined XDF is created.
LS1 Boost OS: If you have Questions about the current release post Here. If you have feature suggestions post in the Development Thread

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