new $EE tuning thing!

[Thatdudeorion]

On another note, the filtered VSS was around 1/2 of my actual speed on the transmission tab.

Same here.

[steveo]

can you give me a log with both the engine and transmission data together? i can correlate the two and figure a proper correction factor and fix the definition.

[kur4o]

force motor dc m4 command
00 00 00 00 00 00 01 xx 00 00 00 00

xx=dc%

3-2 sol dc command

00 00 00 00 00 00 02 xx 00 00 00 00

xx=dc%

egr dc%
[ON] 00 00 00 00 00 00 04 xx 00 00 00 00
xx=dc%
__________________________________________________ __
FORCE motor, 3-2 sol, and EGR are exclusive. Only one at a time.
__________________________________________________ __

tcc pwm sol on/off

[Off-0% - byte 6, bit $02 must be zero]00 00 00 00 02 00 00 00 00 00 00 00
[ON-100%]00 00 00 00 02 02 00 00 00 00 00 00

extend IAC to max position

40 00 00 00 00 00 00 00 00 00 00 00

[lionelhutz]

can you give me a log with both the engine and transmission data together? i can correlate the two and figure a proper correction factor and fix the definition.

I looked again and it's exactly half. Just take the .zip off.

The VSS2 road speed a little further down the table is correct.

[steveo]

alright, the next version will have that fixed, and i'll work on adding the transmission stuff.

[steveo]

what's a good way to express line pressure? 0-255? 0-100%? or is there some unit conversion into psi i can do

force motor is line pressure control, right?

[steveo]

can anyone think of a real reason i should add 32DSS or EGR duty cycle (for tuning, not just as a toy)?

i've uploaded a new beta this morning with line pressure control from 0-255 for testing, should be online shortly

[lionelhutz]

I've seen GM documents for testing line pressure that say to use the TECH and change the current in 0.1A steps. So, it'd be interesting to see if this is current or % duty cycle. If it's current then there should be some conversion possible between the raw 0-255 into 0-1A. If it's % duty cycle then the range can only go to 100%.

There is no conversion for pressure. The internal setup in the transmission can change how much pressure a certain force motor current produces.

The AT pressure control is very convoluted. The tables and factors all use 0-96 "pressure" factors which are looked up in another table to convert to current. The PCM sends the current to the transmission which hopefully is working correctly and produces the correct pressure. The PCM only has feedback or monitoring for the current, not the line pressure.

[Thatdudeorion]

Are you talking about being able to control the EGR solenoid manually??? If so, I would be super excited about that. I've been doing my research and I think there is more MPG to be gained from the EGR tuning, but I can't get the ECM to control the solenoid like I want it. A manual control would be huge for me.

can anyone think of a real reason i should add 32DSS or EGR duty cycle (for tuning, not just as a toy)?

i've uploaded a new beta this morning with line pressure control from 0-255 for testing, should be online shortly