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Author Topic: Throttle cut function in FR.  (Read 3300 times)
kacperoooni
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« on: March 15, 2023, 01:31:45 PM »

Hi,

Does someone knows which function in FR is responsible for overboost throttle cut? Page, name or anything. Thanks!
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prj
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« Reply #1 on: March 15, 2023, 01:57:34 PM »

FUEREG

There is no throttle reaction to overboost though. Only if load is higher than spec.
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kacperoooni
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« Reply #2 on: March 15, 2023, 04:57:57 PM »

FUEREG

There is no throttle reaction to overboost though. Only if load is higher than spec.

Are you sure? I thought the same, but even with rescaled load on WOT (so it will never exceed specified) there is a throttle cut.

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phila_dot
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« Reply #3 on: March 15, 2023, 05:41:19 PM »

LDUVST
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prj
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« Reply #4 on: March 15, 2023, 06:02:22 PM »

Are you sure? I thought the same, but even with rescaled load on WOT (so it will never exceed specified) there is a throttle cut.
As you can see this throttle cut does absolutely nothing to the performance of the car.
You simply drop out of the "überweg" pressure ratio.

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nyet
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« Reply #5 on: March 15, 2023, 09:34:48 PM »

you are forcing to do your throttle to do what your PID should be doing.

Fix your PID, end of story.
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kacperoooni
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« Reply #6 on: March 16, 2023, 10:53:49 AM »

you are forcing to do your throttle to do what your PID should be doing.

Fix your PID, end of story.

With all due respect, but I didn't ask for solution. I wanted to know where the cut is coming from (function, not the reason)
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kacperoooni
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« Reply #7 on: March 16, 2023, 10:55:04 AM »

As you can see this throttle cut does absolutely nothing to the performance of the car.
You simply drop out of the "überweg" pressure ratio.



I wouldn't say it does nothing. The air mass dropped about ~30g
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prj
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« Reply #8 on: March 17, 2023, 04:41:51 AM »

I wouldn't say it does nothing. The air mass dropped about ~30g
Then on top of everything else wrong in your tune, the throttle and tq isn't calibrated properly either lol.
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kacperoooni
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« Reply #9 on: March 17, 2023, 03:40:30 PM »

Then on top of everything else wrong in your tune, the throttle and tq isn't calibrated properly either lol.

It may be true, anyway, it doesnt matter now. I want to know where is comes from as a fuc tion, not as a reason. I know that recalibrating PID will solve the problem. The purpose of the topic is not to solve the problem. It’s about gaining knowledge about me7. I always thought that throttle cut is related with TM interventions (load req>actual). But the log shows that its overboost related too. But i cant find the function where.
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kacperoooni
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« Reply #10 on: March 17, 2023, 03:56:07 PM »

LDUVST
Isnt that related with n249 only?
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Blazius
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« Reply #11 on: March 17, 2023, 04:17:52 PM »

Fix your overboost.

Also that boost request for that load is very very low, did you touch KFURL or something?
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fknbrkn
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« Reply #12 on: March 17, 2023, 09:33:14 PM »

"überweg"


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kacperoooni
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« Reply #13 on: March 19, 2023, 09:48:31 AM »

Isnt that related with n249 only?

nvm found it Wink
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