Fuel Trim Spark Torque Management

[PSS]

Anyone know what triggers/activates Fuel Trim based spark torque management and what controls how much etc?

See screen shot as example?

Screenshot 2022-10-05 205427.png


Thanks.

[mintnasty]

Having the same issue with procharged 07 truck, cuts injectors at 50/58% throttle and 178 180kpa. any help would be awesome

[GHuggins]

You need to log dynamic airflow - may be the usual self test/fault taking place. You can try a 2bar OS if it's available. Also best to post logs with details on timestamps on where to look and associated tune.

[ABADZL1]

Having the same issue with procharged 07 truck, cuts injectors at 50/58% throttle and 178 180kpa. any help would be awesome

What Transmission is in the truck?

[mintnasty]

What Transmission is in the truck?

built 370 d1sc looking to make 14 16psi. built 4l80e

[mintnasty]

the truck ran fine on maf tune then we went from 8.0 lower to 10.0 lower and switch over to 2bar and now im getting this fuel cut. truck is strap to my dyno and afr is 11.4 11.7 until fuel cut

[ABADZL1]

built 370 d1sc looking to make 14 16psi. built 4l80e

TCM, Abuse mode>Torque Reduction. Zero it out and test, see if that fixes it.

[mintnasty]

still cut

[mintnasty]

i have been strap on dyno for 4hrs trying to find this issue

[ABADZL1]

I went thru the same thing on a trailblazer a while back, and that's what fixed it.

[mintnasty]

I went thru the same thing on a trailblazer a while back, and that's what fixed it.

thank you for the input.

[mintnasty]

i think i got it.
it was in the trans abuse or general tq reduction table. put it all to 1 and 4 pulls no fuel cut