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Author Topic: GTI MK5 K04 Conversion Woosh  (Read 873 times)

Offline K03MK5

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GTI MK5 K04 Conversion Woosh
« on: February 15, 2024, 11:14:16 pm »
Hi all have a Golf GTI MK5 Full K04 conversion stage 2+ and everytime under accelleration I can hear a woosh sound if that makes any sense just before the gfb dv+ kicks in. I have the latest pcv revision r and revision g dv. It seemed to of started when the toyosports fmic was fitted.
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Offline pudding

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Re: GTI MK5 K04 Conversion Woosh
« Reply #1 on: February 17, 2024, 04:16:27 pm »
All that boost has to go somewhere when you back off the gas. Assume you have a sponge on a pipe type intake kit?
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2007 ED30 | 2009 TDI 140 | 2016 BMW 330D

Offline K03MK5

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Re: GTI MK5 K04 Conversion Woosh
« Reply #2 on: February 17, 2024, 05:29:33 pm »
Hi yes of course.  Come to think of it the turbo that came with the kit has an anti surge core upgrade.  So I presume its that.
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Offline pudding

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Re: GTI MK5 K04 Conversion Woosh
« Reply #3 on: February 23, 2024, 05:37:42 pm »
Yeah anti surge housings are noisier than plain ones.  That's why VW fitted a noise reducing muffler to the turbos  :smiley:
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2007 ED30 | 2009 TDI 140 | 2016 BMW 330D
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