LBZ: torque limiting issue

[tinman22]

I have been battling an issue, according to my logs I cannot build more than 530 ft lbs of torque while spooling up and i'm limited to about 1850 rpms. when I get past 47% (47 to 100%)throttle the trqlimact_dma kicks in and starts counting usually with 1024 as the count. and a max of 24608 is what i'm seeing through out the log it constantly changes. where would I reference these limiters to see what the hold up is?

 

[JoshH]

Have you played with the new brake torque tables?

 

[tinman22]

yup. no difference that I noticed. and if that was active according to the parameters i'd be limited to 1300 rpms. it almost seems to be related to ect. if the truck sits long enough and cools down a bit , it wont do it and I have had it push up to 22 or 2300 and push through the brakes

 

[JoshH]

Do you want to post up your tune?

 

[tinman22]

not really :secret: lol could be dangerous in the wrong hands

 

[JoshH]

I guess I can't really help much unless I can see the tune, but I can't see what would be limiting torque only when you're on the brakes.

 

[tinman22]

maybe i'll just go back to using a superchips. lol I had less issues and was more consistant.... but damn it was slow with that.

 

[othrgrl]

None of the LBZs we've tuned have had this problem and Chris's truck is consistant as hell. Without looking over the tune for you there's not much we can do to help.

 

[NJ_LLY]

Is it figured out yet?

 

[tinman22]

testing changes. no report yet

 

[NJ_LLY]

There is always wednesday for testing.

 

[tinman22]

I agree that will possibly have the test bed. a test yesterday showed improvement, but since this isnt a consistant issue i'll have to try again

 

[Morgans LBZ]

Tinman I also noticed a spike of 24608 when looking at "Torque Limiters Active". I am wondering if the motor and tuning can operate at full potential with these limiters active. If there is a way to keep these numbers at 0, I would like to know about it. Not confident enough with efi live yet to go tweaking with all the Wrong tables though

 

[tinman22]

it seems that I may have corrected this. but i'll have to get to the track to test for sure. possibly next week or this weekend when i'm in a less populated area.