Help Setting Up TLIQ

FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
I need some help setting the TLIQ tables for my LLY.

I had some pretty bad flare during shifting around 50% throttle, which is usually about 22-2600 rpm. So to fix it I started decreasing the TLIQ tables.. B0744. But I actually noticed that if I limited the top end of the table down to 70-80mm3, it would actually limit the fueling the truck got whether it was shifting or not. It had a hard time getting to 3000rpm.

So I returned the top of that table to 100mm3 and smoothed out the table a bit but it still isn't shifting right.

I dont understand how the whole DMAX_TRQ_DMA pid works either... Is there a way I can log some parameters to understand this whole torque limiting thing? The only thing I noticed is that that torque reading stays at about 1200N-m until it goes to shift and it drops to 300 or so for a short period, and that is when my fuel rate and pulsewidth will take a jump.

I like the way it shifts wide open right now, I just want to smooth/defuel the 50% throttle shifts a bit. Any help would be appreciated!
 
wilsonck

wilsonck

New member
May 8, 2008
206
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Calgary, Ab
I think I saw the same thing when I logged it too. Hopefully someone who knows more about it will chime in.
 
Last edited:
FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
Ya. This whole ordeal confuses me.

One more thing I can add for info if anybody has ideas:

When I look at the log it appears as though the fueling takes a little spike right before it shifts. So right before the torque_DMA takes a big drop there is a fuel spike, then the fuel trend line dips a bit to just below where it was as it was accelerating. Then, as the torque trend starts to rise and the shift is pretty well completed there is another, bigger, spike in fueling. And then it settles out.

I could upload a log if I knew how???
 
sweetdiesel

sweetdiesel

That's better
Aug 6, 2006
10,390
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Thailand
The TLIQ will limit what is in the TBIQ table so lowering it at WOT areas wont really help especially if your PW at say 60-80mm3 is altered

If WOT is good I would use stock tables below 70-80mm3 in the TLIQ & PW tables atleast for now And then baby step it up in the midrange
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,388
661
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in the buckeye state
sweetdiesel said:
The TLIQ will limit what is in the TBIQ table so lowering it at WOT areas wont really help especially if your PW at say 60-80mm3 is altered

If WOT is good I would use stock tables below 70-80mm3 in the TLIQ & PW tables atleast for now And then baby step it up in the midrange
Click to expand...

dont forget to use the same principle in base torque as well.
one is pre shift power other is post shift power
 
FMOS

FMOS

Hard Up
Nov 19, 2008
352
0
0
Fort McMurray, Alberta, Canada
Ya, WOT is perfect on the truck. It bangs gears off smoothly and accelerates nice.

What other torque tables are we looking at? The only ones I see are the TLIQ table which is a torque referenced table. And the TBIQ, which is a mm3 referenced table.

I thought the TBIQ table us the one that basically effects overall torque management, full time, even when pulling 5th gear for example, I thought that table would limit the fueling.

And I thought the TLIQ table limits the fueling when the transmission sends the signal that its going to shift.
 
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