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Author Topic: Throttle closed issue on MED9  (Read 2930 times)
brs
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« on: October 03, 2020, 09:59:11 PM »

Hello everyone,
It is a Golf 2.0TFSI with DSG
Shortly specs; GTX30 turbo,External wastegate,RS4 injectors,Autotech HFPF,dual LPFP (Oem and aem),Boost controller etc..
No way overboost or dtc.AFR good,long and short fuel trims are good,injection timing max 5.87ms,any not knock but still throttle is closing till %50
any Torque intervention doesn't appear by DSG in vcds block 122.
What can cause throttle to close?

Logs are attached


Any help is much appreciated
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IamwhoIam
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« Reply #1 on: October 04, 2020, 09:20:41 AM »

How close to "true" is your MAF scaling? I'd start with that.
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I have no logs because I have a boost gauge (makes things easier)
brs
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« Reply #2 on: October 04, 2020, 10:24:04 AM »

How close to "true" is your MAF scaling? I'd start with that.

i think maf scaling done right,no knocking, LTFT is well enough.Nothing changed when I unplugged of maf sensor.

I tried a Mafless file but still throttle closes
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teobolo
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« Reply #3 on: October 05, 2020, 04:20:42 AM »

is N75 pluged in ?is there any faults classes disabled ? tried to enable them al backup to see if is there a fault ?
« Last Edit: October 05, 2020, 04:24:16 AM by teobolo » Logged
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