The ultimate LT1 $$EE patch thread

[kur4o]

Here is the first official beta release of my latest patch.
Patch allows you to monitor all airflow calculation at the same time. That way you can monitor SD calculated airflow, compare it to the MAF airflow and see if your ve table is off or spot on.
It also allows you to change between SD and MAF mode in real time through modified eehack program.

Important
For patch to work your bin shoud be set in MAF mode.
You can only change from MAF to SD.
If the bin is set to SD mode don`t use it.

How to install the patch.
Very imortant to follow steps exactly as written.
First flash your PCM with your favorite bin with eehack 4.7 program. You must set the eehack with following options checked :insert patches and skip unused regions.

Than read the PCM and save the file.

Now patch the saved file with MAF Airflow patch v2 and Enable m4 control for SD mode patch.
Important.
Enable m4 control for SD mode patch must be used only if MAF Airflow patch v2 is applied.
It only allows you to control SD mode through the modified eehack program.

VERY IMPORTANT
After you applied the patch of your choice, flash the bin with eehack program with the following options unchecked: insert patches.

Move the provided eehack49.exe to the folder where eehack is installed and run from there. Set eehack to use the supplied definition file.
Enjoy.

LIMITATIONS
There are some broken datastream and some parameters are visible on the hacker level.
The high res rpm will not work.
You can monitor rpm at the low res RPM datastream

[steveo]

sounds awesome, wish i still had an lt1 so i could try it. nice work

[kur4o]

This is a lighter version of sd control patch.

It lets you switch from MAF to SD through modified eehack program and enables display of current MAf cell number, SD airflow and calculated VE%.
All of the datastream works including pin d27 wideband.

Datastream that wont work is some trans error byte and egr DC%.

If anyone needs to switch from SD to MAF , let me know. It is one byte simple fix.

[johnny_b]

If I'm understanding you correctly we can switch between maf and speed density without flashing?

[kur4o]

That is right.
It works like regular mode 4 control.
There are some limitations though. It is not a permanent setting. It can be set with the engine running. It will be in effect until PCM is reset by cycling ignition.
If you apply the patch you will be running in MAF mode with the option to switch to SD mode anytime you want.
Another patch will be made if anyone needs to run in SD mode and switch to MAF mode.

[steveo]

after this is better tested i'd love to pull it back into the main eehack branch and include the patch in eehack itself. please report results

[kur4o]

I will be really happy if you do that.

Maybe make a checkbox, so users select which patches to add as an addition to the main patch.
I will post a log to see how it works. You can tell which mode is by looking at ve value. If it is updating it is in SD mode. When it freezes and MAF starts updating your in MAF mode.
I also tested thoroughly open loop idle patch. It works flawless. If you want you can add it too.

SD control needs to be 2 different patches.
1st will be for running MAF mode with the ability to switch to SD
the other will be for running SD with the ability to switch to MAF.

Next great thing that I am working on is a realtime delta change +-5% of calculated VE%.
Patch is almost done but I am missing the control interface at eehack level.
If you can add a slider bar similar to spark control bar we can get it work.

I will rework the eside aldl patch too. Now it has some data colision at SPI comm with main eehack patch and applying the patch is real pain.
I moved some spi address pointer, which is really not needed, so want that fixed.