new $EE tuning thing!

**steveo** · 10-07-2015

Originally Posted by kur4o

One limitation of mode 4 is that when you send new single command for example set AFR, all previously set commands are zeroed.
So all the modification must be contained in one single thread or every next parameter must be added to the existing command thread.

only a limitiation when working in something like tunerpro that is merely designed to transmit a byte array and not construct one. i just have a byte array[] and modify it as i go, transmitting the entire thing when changed.

having things setup for mode 3 like that, you're essentially working with an OBD2 style PID request string, which has its significant overhead drawbacks. sending a request for 6 bytes is going to take something like 16 bytes sent, then receiving 10.

totally. 8192 baud isn't a lot of bandwidth. any 'extended parameters' as i call them will have their own checkbox to enable them, the idea being you only view them when needed, then disable them.

The solution is to add clear blm + froze blm command and then set AFR target.

i got freeze BLM working, but i can't make it reset the BLM. maybe i've noted the wrong byte. do you happen to know the mode4 command for that?

**kur4o** · 10-07-2015

Tunerpro defenitely is not the right tool for mode 4 control.
It is such a pain to use it.
I got very happy when I saw you`re working on this new software.

Here is the commands you may be interested in

SET BLM to 128
20 00 00 00 00 00 00 00 00 00 00 00

It is used once
If you want to run it again send
00 00 00 00 00 00 00 00 00 00 00 00
and then
20 00 00 00 00 00 00 00 00 00 00 00

Forced open loop use this
00 00 00 40 00 00 00 00 00 00 00 00

Forced closed loop
00 00 00 40 40 00 00 00 00 00 00 00

BLM update (LEARN) disable
00 00 00 20 00 00 00 00 00 00 00 00

BLM UPDATE (LEARN) FORCED ENABLE
00 00 00 20 20 00 00 00 00 00 00 00

I think BLM enable was labelled wrong as open loop so you can check what you have on file
Anyway these are the correct settings

**steveo** · 10-07-2015

got it, that works!

thanks again

**steveo** · 10-07-2015

see new version:

0.6b:
Make welcome warning a bit more friendly
Optional hack-keep-alive packet at interval
Enable AFR override after some fixes, thanks kur4o!
Added a settings window, we'll need one
Add two timing skew range modes (for bumpy roads)
Hover over BLM cell for a reminder chart

**kur4o** · 10-07-2015

Attachment 9620
I am keep getting this error on the desktop.
Will try also on another computer.

**steveo** · 10-07-2015

this program requires windows xp SP3 (because QT uses that getlogicalprocessorinformation call)

**steveo** · 10-08-2015

posted another new version. has some mode3 junk. posted source code too, should work with linux.

**lionelhutz** · 10-08-2015

I'll have to try it out sometime Steve, but it may not be until the spring now since I won't likely get any convertible driving weather days until then.

Is there any software tricks to communicate at 8192 baud? I do some VB.net programming but don't know much about serial port control beyond using the standard baud rates.