Throttle closing issue

[GregRexAdams]

Attached are some data logs, configs, and tune file.

By lowering the torque tables, I've been able to extend when the throttle closes, but not eliminate it. It shuts the car down repeatedly. However, on some runs it will actually run fine. It seems to be exceeding a torque limit somewhere.

I can't see where torque source is affecting it. I see the short term trims yank a lot of fuel, but it's hard to tell if it is because the throttle body slams shut, or if the TB slams shut due to the yanking of fuel.

Any advice would be greatly appreciated.

[GregRexAdams]

Forgot the config.

[Eric@HPTuners]

What are the modifications?

[GregRexAdams]

AFE air intake and long tube headers.

[SultanHassanMasTuning]

return your torque and inverse torque tables to stock


under electronic throttle

and 545 load (throttle APP) multiply by 1.2 (add 20%) and under that 311 add 10% multiply by 1.1

and give it a try


and if you lower your driver demand table return it to stock then apply the above

[GregRexAdams]

I tried it, similar result. I had tried similar tunes before. Car is completely normal until you get the throttle all the way down. Then it just shuts down.

[SultanHassanMasTuning]

match start and end 545/545 try again...

[toyoguru]

Can you post your stock tune file? Im seeing something in the idle airflow table that doesn't look right. And this intake you have added, is there a spec sheet for how much larger the area is vs the stock piece? I came up with a 34% difference doing math off of my stock file.

[GregRexAdams]

I can post it in a little bit. I haven't seen a spec sheet. I'm not following on match start and end 545/545? I appreciate the help guys.

[GregRexAdams]

Here is the stock calibration.

[GregRexAdams]

Any additional thoughts on this one?

[SultanHassanMasTuning]

return your torque calculations to stock

[GregRexAdams]

Found it. Had a fat finger on commanded lamda at wide open throttle. It was off a decimal, but since the numbers were right, I looked over it.

Thank you to everyone for the help!