Printable View
I have a 2022 ZL1 with kooks headers, 15% lower, and Rotofab intake. The car runs wonderfully and I'm completely happy with everything about it.. EXCEPT when I'm at the track with it, the throttle will close on launch some. I have attached the current tune and datalog from last night. That pass was a 1.54 60', 6.678 @ 107mph, and 10.32 at 133mph. I have tried tweaking the lower mph driver demand table at 75% throttle and higher with no changes.
Use these channels if you don't mind. They work on the 22's too that I've used them on so should be good. These will provide more data as far as torque and everything important goes. Then post that log up. Also usually means the torque model has been messed with and possibly adjusted wrongly or it's just hitting higher areas of the stock model - honestly didn't look - just speaking from what I normally see. I also assume traction isn't being used here? Almost looks like traction control in first gear.
To use - download - right click - show in folder - right click - copy - open scanner - open recent channel config - open recent config - paste here and then click on.
If the transmission hasn't been unlocked it can be hitting a limiter there too, so just be aware of that.
They will do that with a stock trans tune.
Not enough info in the logs as Greg advised. I browsed over the tune file and some of the torque limiters are still in place. The TCM has some limiters in it as well but I don't see the TCM attached to this file.
Anyhow I made a couple of changes. Try this file.
Attachment 137486
TCM is still stock. I'll use the new channels and do another log on Thursday night when I go to the track again. All traction control is off at the track.
You're likely hitting the Transmission gear vs torque limits. Some fudge the Torque model to report less torque as a workaround. I prefer to have the TCM unlocked and tune it the right way.Quote:
Originally Posted by sculbert1