Flaps med 9.1, 4.2fsi.

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Topic: Flaps med 9.1, 4.2fsi. (Read 1933 times)

quuuun

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	Flaps med 9.1, 4.2fsi. « on: November 02, 2022, 03:31:34 PM »

Hello, delete a flaps on med 9.1.1, dtc off and FHOKH set to 4, will dissolve a cold start problem?


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Dande

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	Re: Flaps med 9.1, 4.2fsi. « Reply #1 on: November 04, 2022, 01:22:57 PM »

To disable cat heating and solve terrible cold start set TKHMX to 0.

To disable flaps:

CLALBK   0
CLALBKE   0
CLALBKEP   0
CLALBKO   0
CLALBKP   0
CWALBK   0
CWBGLBK   0
CWLBK   0

After that ecu will not wont to move flaps. If i am not wrong.


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prj

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	Re: Flaps med 9.1, 4.2fsi. « Reply #2 on: November 04, 2022, 04:20:30 PM »

With correct disable you do not need to adjust any "CLA" maps.
Also, 4.2 FSI loses torque with flaps delete.

They are not there for cold start like on 2.0TFSI.
On NA engines intake flaps are used to tune intake manifold runner length to RPM. With them open you always have only one path and you lose torque everywhere except top end.


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quuuun

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	Re: Flaps med 9.1, 4.2fsi. « Reply #3 on: November 06, 2022, 10:10:27 AM »

I know this delete flaps on the engine, torques lost. You think to delete need only dtc code?


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Blazius

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	Re: Flaps med 9.1, 4.2fsi. « Reply #4 on: November 06, 2022, 12:14:29 PM »

If you need to code out DTC's you did something wrong, only in the most extreme cases should you do that.

In this case, do it properly. Why would you do it however is beyond me, before I turbocharged my NA engine it was literally night and day difference between torque runner and non torque runner in the proper rpm's.


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prj

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	Re: Flaps med 9.1, 4.2fsi. « Reply #5 on: November 07, 2022, 01:30:05 AM »

With correct delete no DTC's need to be deleted. So no CLA maps should be touched.


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cherry

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	Re: Flaps med 9.1, 4.2fsi. « Reply #6 on: November 07, 2022, 03:40:11 AM »

Some 4,2fsi has runner flaps + manifold length flaps. What engine are you talking about? Anyway always better to repair instead of disable.


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