Is there any reason to change/not change the torque models on a stock engine / trans?
Printable View
Is there any reason to change/not change the torque models on a stock engine / trans?
anything new happening with this.
I noticed something weird while tuning GMC Sierra 2500HD 2013
when increasing the tables in torque model by any value it will limit the TB opening while WOT to 61%
I'm logging ETCT and it was fine before adding to the Torque model
Any thoughts ?
What ECM, E78? Have you raised the TQ limits? Remember the newer ECMs try to meet the desired TQ value, if they hit it then they will limit throttle, boost, and so on. If you've raised the torque model to match that of the engine, you need to make sure the TQ limits are above that otherwise it will act as a "master" limiter.
Yes E78 ECM
And yes I raised all torque limits in ECM
but dis not raise the torque limits in TCM
what tables in E78 do you suggest to raise ?
You'd have to post both files for me to check, but I know in the E78 you should look at B8801-B8804, B8300-B8303, B7017. However, it appears that not all the TQ tables are there, HPT has a few more TQ related tables that might be coming into play.
Try modifying the TCM as well, the TCM might be asking the ECM to limit power if it's limits are being met.