Defueling with DSP?

[LBZrcks]

Has anyone else ever had an issue with LBZ/LMM DSP tunes defueling more for some reason compared to a single tune in the ECM?

On a LMM the truck would fall on it's face for a second or two then pick right back up.

Put a DSP 5 on my 06' and it seems to be doing the same thing now at the track.

 

[GMC_2002_Dmax]

When you made the DSP2 or DSP5 did you configure the units to "ALL IMPERIAL" or "ALL METRIC" ?

If you didn't and copy/pasted the number in you could have NM instead of LBS/FT for the torque values.

 

[LBZrcks]

When you made the DSP2 or DSP5 did you configure the units to "ALL IMPERIAL" or "ALL METRIC" ?

If you didn't and copy/pasted the number in you could have NM instead of LBS/FT for the torque values.

I double checked and they're all in imperial. The LMM was a tune I did for a friend and for my 06' it was done by another tuner since I out a bigger charger.

I was just bored trying to get it figured out since both trucks started doing it with a DSP 5 tune.

 

[GMC_2002_Dmax]

Did you raise the Torque Value vs. RPM limit table ?

A9115,
A9215
A9315
A9415

 

[LBZrcks]

Did you raise the Torque Value vs. RPM limit table ?

A9115,
A9215
A9315
A9415

Yes those were raised, but I was running on the base tune too. I put the same tune into a single tune O.S. and the problem went away.

 

[GMC_2002_Dmax]

When you made the tune did you copy/paste or run a script ?

The reason I am asking is that a LBZ script will not work on an LMM.

 

[jckleewein]

I just got my defueling issue fixed a couple of weeks ago. With the DSP5 switch installed the truck would not shift from 2 to 3, 3 to 4, and etc. unless I let off the pedal. I spent many hours going through the entire fuel system, but no luck. I decided to put a single tune in, and the truck defueling issue went away. I bought a new switch, and everything work correctly again.

Not sure if its the same problem, but its worth a shot.

JC

 

[DmaxHawk]

Have you checked the defuel on the tcm?

Sent from my DROIDX using Tapatalk sitting at a table at the Rose Garden restaurant while eating toast.

 

[LBZrcks]

When you made the tune did you copy/paste or run a script ?

The reason I am asking is that a LBZ script will not work on an LMM.

I just copied and pasted the for the DSP 1-4 tables on the LMM tune. I know that a LBZ tune won't work for LMM's

 

[LBZrcks]

I just got my defueling issue fixed a couple of weeks ago. With the DSP5 switch installed the truck would not shift from 2 to 3, 3 to 4, and etc. unless I let off the pedal. I spent many hours going through the entire fuel system, but no luck. I decided to put a single tune in, and the truck defueling issue went away. I bought a new switch, and everything work correctly again.

Not sure if its the same problem, but its worth a shot.

JC

Pretty much the same symptoms you listed. Haven't tried replacing the switch(s), they were brand new but anything is possible.

 

[LBZrcks]

Have you checked the defuel on the tcm?

Sent from my DROIDX using Tapatalk sitting at a table at the Rose Garden restaurant while eating toast.

I have a TCM tune in my 06' but it doesn't make a difference. I tried a stock TCM tune and a few modded ones. The only way the issue went away was by putting the original ECM operating system in, even if it was with the same exact tune.

 

[x MadMAX DIESEL]

Can you "script" a dsp tune into a single tune? I want to try a single tune only