Turbo serge/cavatation

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Gassed ATD
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Turbo serge/cavatation

Post by Gassed ATD »

Hey Guys
Im running a ATD with a GTB2260vklr when it hits high boost it surges/cavatates i have tried running it without any induction pipe and still does it. Has anyone had this kinda issue and if so how did you sort it out
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THANAS
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Re: Turbo serge/cavatation

Post by THANAS »

You need to give more information/logs etc. What sort of boost are you running?
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panic-mechanic
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Re: Turbo serge/cavatation

Post by panic-mechanic »

For a start I have no idea what an ATD is.
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Re: Turbo serge/cavatation

Post by THANAS »

It's the 74kw motor found in the 9N/N3 Polo Tdis.
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Re: Turbo serge/cavatation

Post by Unobeat »

panic-mechanic wrote:For a start I have no idea what an ATD is.
From sniffing a bit.
It seems it is the 1.9 Tdi motor in the Polo TDI.

Ai these acronyms..
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Re: Turbo serge/cavatation

Post by amstel18 »

Have you increased the injector nozzles? Sure its not running lean?

As mentioned, more info is needed.
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Re: Turbo serge/cavatation

Post by THANAS »

Overboosting without enough fuel with a tdi tends to make it 'popcorn' and shudder under the spike. Especially prominent on the 74 kw setups with original injectors and especially if SOI has been fettled with.
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Re: Turbo serge/cavatation

Post by Killerwatt »

Like others mentioned, more info would be needed.
Boost and airflow log would be great.
Could be as simple as an incorrectly adjusted actuator.
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Re: Turbo serge/cavatation

Post by panic-mechanic »

Ah engine code ATD thanks.Was thinking here is a brand new acronym again.
Yeah does it run well when you have low boost requested and at what kind of boost levels is this happening.
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Re: Turbo serge/cavatation

Post by Gassed ATD »

ATD is 96kw TDi motor or PD130 serge starts at 1.6bar and stops at 1.8bar
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Re: Turbo serge/cavatation

Post by Gassed ATD »

Killerwatt wrote:Like others mentioned, more info would be needed.
Boost and airflow log would be great.
Could be as simple as an incorrectly adjusted actuator.
Car is running +100% nozzels, gtb2260vklr, profidiesel intake mani,76 st pipe,fmic, nitrous,water/meth, software ++++
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Re: Turbo serge/cavatation

Post by THANAS »

The ASZ is the 96 kw/PD130 motor. What is the engine speed that it starts to surge at?
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Re: Turbo serge/cavatation

Post by Gassed ATD »

THANAS wrote:The ASZ is the 96 kw/PD130 motor. What is the engine speed that it starts to surge at?
Round 2900rpm to 3700rpm +-
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Re: Turbo serge/cavatation

Post by THANAS »

And what does your tuner say?
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Re: Turbo serge/cavatation

Post by DzlBoyWP »

Killerwatt wrote:Like others mentioned, more info would be needed.
Boost and airflow log would be great.
Could be as simple as an incorrectly adjusted actuator.
This..
Also check if injectors been torqued down properly.
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