LT1 C7 Torque Management Pulling Timing Light Throttle

[DobermanRacing]

2015 C7 LT1

• LT9 3 Bar Map
• Baro/IAT Breakout
• V3SI blower
• TSP 2" LT headers catless

I posted previously for help learning how to rescale my tune from the 1 bar to 3 bar map sensor. I am now having an issue with torque management pulling timing under light throttle usually between ~2000rpm up to 2800rpm. When it happens it feels like the car bogs and then accelerates aggressively once TM stops pulling timing.

I'm not sure if this is from VTT and/or driver demand needing adjustment as it doesn't appear to be closing the throttle.

I've attached the current tune along with 2 logs (file size too large for forum so uploaded to my google drive).

1002-Update.hpt

Logs -
https://drive.google.com/file/d/1-rJ...ew?usp=sharing

https://drive.google.com/file/d/1-rr...ew?usp=sharing


Screen shot of an example of it happening
Screenshot 2023-10-13 165031.png


Also does anyone have the link to purchase from a user's website on here to have my knock sensor's noise calibration adjusted to match the LT4s?

[TriPinTaZ]

Easiest thing to try first is to increase driver demand where it is happening. You should add Driver Demand Engine Torque PID's as well to see what is being commanded by Driver Demand. Post another log with that PID included and do an export for just the part of the log that the issue happens. Posting up so much log data to dig through is too cumbersome.


Here is the site to purchase the user defined parameter you're looking for.
https://minigeist.net/

[GHuggins]

Like Jason pointed out the first thing DD will limit is timing before it will limit throttle. This is if it's close enough. Log DD error. If there are positive errors - in other words it shows that you need to add to it - then try that first. 100 * ([2114.156] - [2111.156]) / [2111.156] Make sure you're logging the right channels.

After that the torque model, pedal progression being too low, throttle rate being too low and max torque will cause the same problems. You can even alter your min timing idle tables to help.