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killerbee
July 8th, 2009, 02:42 AM
Here is a typical log of an LBZ (stock tune) I decided to work on. Just doing some learning right now. I am having trouble tracking where the fuel is being limited. Torque limited? Specific table?

http://forum.efilive.com/attachment.php?attachmentid=5755&d=1247067623

LBZoom
July 8th, 2009, 07:34 AM
It's not in the Tranny torque tables by chance is it? I'm at work and don't have access to my laptop to get the specific table number for you sorry. What about IAT limiting? Just throwing ideas out...

killerbee
July 8th, 2009, 07:44 AM
Thanks for the reply. I will look at those. I will disable TCM in
B1130 and see if that helps.

LBZoom
July 8th, 2009, 07:48 AM
No problem, If you'd like a tune of mine that isn't limited and will put out 120mm3 of fuel just to compare some tables with yours just PM me.

bballer182
July 8th, 2009, 11:50 AM
Take a look at D5197

bballer182
July 8th, 2009, 11:53 AM
Yeah i might look at the IAT, also...

killerbee
July 8th, 2009, 11:53 AM
B1122

The vertical axis is torque limiting "factor". Can someone describe where these values are derived?

killerbee
July 8th, 2009, 11:56 AM
Take a look at D5197

I don't have that one. Is it new?

bballer182
July 8th, 2009, 11:58 AM
B1122

The vertical axis is torque limiting "factor". Can someone describe where these values are derived?

I would bet that the engineers at GM probably derived them....


Um, yeah, anyways that can be a limiting table if not opened up a little bit.

bballer182
July 8th, 2009, 11:59 AM
I don't have that one. Is it new?

tranny tune. 6 speed. sorry.

killerbee
July 8th, 2009, 12:06 PM
I would bet that the engineers at GM probably derived them....


Um, yeah, anyways that can be a limiting table if not opened up a little bit.

I meant, where is "factor" elsewhere in the tune? How does "factor" change? What operating parameter(s) affect "factor"? How do you log "factor"?

Sorry if this sounds crazy, I am drawing a blank on making sense of it. It obviously limits fuel, but why?

If anyone knows... :)

bballer182
July 8th, 2009, 12:19 PM
actually you can log factor. there is a PID called trqfactor or something.


B1120 and B1121 make factors among other tables that are adds together to make a final factor which is where B1122 comes in to play.

bballer182
July 8th, 2009, 12:29 PM
hmmm, cant seem to find the PID now; i used to have it. might be called something else now.

killerbee
July 8th, 2009, 04:21 PM
Take a look at D5197

is it true that disabling torque limits will ruin the stocker?

bballer182
July 9th, 2009, 12:12 AM
is it true that disabling torque limits will ruin the stocker?

It can and will if you are retarded with it!

killerbee
July 9th, 2009, 06:53 AM
Thanks for the help. Got er done.

killerbee
July 23rd, 2009, 08:53 AM
B1122

The vertical axis is torque limiting "factor". Can someone describe where these values are derived?

was hoping someone could shed some logic on this.

GMPX
July 23rd, 2009, 09:48 AM
The factor value is derived from tables B1120 & B1121, the smaller value wins.

killerbee
July 24th, 2009, 02:22 AM
Thank you!

JoshH
August 2nd, 2009, 03:26 AM
The factor value is derived from tables B1120 & B1121, the smaller value wins.
Ross, I think there is another table similar to B1120 that has not yet been found. I think there is something that creates a torque factor based on barometric pressure. That's what B1120 does, but it is only active when the engine is in overheat mode. I think there is something else when it isn't being overheated. I don't think it's vitally important to be found as you can get around it with B1122. Anyway, any thoughts?