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Author Topic: Med9.1 overboost problem  (Read 161 times)
dreconx
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« on: March 29, 2025, 03:20:00 PM »

Hi guys,

I'm trying to tune this mark 6R with hybrid turbo and HPFP but i keep getting overboost on turbo spool.
Im asking for 1.5B boost and on spool i peak to 2bar but i cant seem to control it.
Played around with KFLDIMX and increased KFLDRQ2 but nothing seems to work.

It has unknown hybrid turbo on it so im thinking the wastegate is to small so it just boost creeps like crayz?
I know im a bit low on my WGDUTY to hold 1.5bar but il adjust it after i fix the overboost problem.

Here are some picture's of my maps and logs.
Hope you guys can tell me that i'm on the right path.
I'm still learning so tips would be helpful!

Thanks

TuneZilla Log:
https://log.tunezilla.com/chart/931411#H8KLCADDu3DDqGcCA03CjUEOw4IwDATDv8OiwrMtNcOAb8KiHAzCtcKCwqXCkFTCjsKLCsKvL20Fw6LCssKHGcKNNkbCuMK1w4dVwqtQwrY2Tx1wSMK4w4HDkkzDnwIIXMOKZ8KzVDF2woHDg8OWwqfCmMKTN1rCiBfDncKqwqPDo3HCpMOXD8KBacK+w7vCnnTDsT8RBwx4w4ZTQgjCu8Omw5lbwp/CisO6w7cwXFJaAWHDhMOww6XCnQAAAA==

KFLDQ2


KFLDIMX


KFLDRL


LRDXN


kfmirl


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fknbrkn
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Posts: 1496


mk4 1.8T AUM


« Reply #1 on: March 30, 2025, 04:40:02 AM »

check the base pressure (tvldmx = 0 or fill kfldrl with 0)
if its rediciluosly high, time to fix hw or slighlty release wg preload


you can significally drop ldr / imx but this setup basically unsafe and its always better to fix hw first
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