L30 / L31 "base engine friction torque vs rpm vs vacuum" table

[Hog]

An L31 should be similar to an LT1, but I cant find those tables in any LT1 calibration.

peace
Hog

[1project2many]

I expect they're part of the torque calculation for torque management. I don't remember seeing engine torque as an active variable in the LT1 calibrations. It may be part of the 4.3 calibrations so I'll check a few of them out.

[Fast355]

I expect they're part of the torque calculation for torque management. I don't remember seeing engine torque as an active variable in the LT1 calibrations. It may be part of the 4.3 calibrations so I'll check a few of them out.

IIRC there are several torque calibration tables in the 0411. One for the A/C, one for the accessories and an engine.

[1project2many]

Interesting. The tables above are form the 98 black box. I'll have to see if there are other tables to view.

[Hog]

Interesting. The tables above are form the 98 black box. I'll have to see if there are other tables to view.

Which are the same as the 1996 blackbox tables I posted.

peace
Hog

[1project2many]

Good to know. Thanks.

[Fast355]

This is some of the 0411 L31 stuff, it gets much more complex. Some of the even more complex modeling of the LSx engines is not enabled on the L31 van, such as A/C Torque vs A/C pressure. Much of the torque mapping is used to help control idle speeds and regulate torque delivery. Something as simple as an a/c clutch engaging or disengaging even above idle is smoothed by timing and IAC variation. That is one thing I noticed with the 0411, I can no longer feel the a/c clutch kick in or out. I can hear the clutch, but that is it. It even seems like the tune uses more throttle follower to compensate for the decreased torque off-idle.