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Author Topic: Hissing sound when boosting? mk4 gti 180 bhp  (Read 3204 times)

Offline fowler21

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Hissing sound when boosting? mk4 gti 180 bhp
« on: 28 June 2010, 20:47 »
MK4 anniversary 180hp.

ive got a forge splitter dv , boost gauge and a bmc airbox the secondary air punp hose it just sitting there and when i boost i get a load hising sound but i cant find where its comeing from .ive checked my hoses and theres no cuts ect any ideas anyone?????
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Offline Hulmie

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #1 on: 28 June 2010, 21:00 »
ditch the split-r dv and get a 007p. Also you may just be hearing the turbo spool up
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Offline fowler21

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #2 on: 28 June 2010, 21:02 »
i fort they where the same thing ?? its around 6k revs sounds like its leaking :(
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Offline Hulmie

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #3 on: 28 June 2010, 21:32 »
think the Split-r dv can only be closed off to 70%. the split-r is a part atmospheric, part re-circ valve. A 007p is a full recirc valve.
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Offline topher

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #4 on: 28 June 2010, 21:42 »
the spring may need adjusting for the warmer weather - have you tried going through the setup procedure again?
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Offline Big Tone

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #5 on: 28 June 2010, 21:43 »
I have same issue, gets to and holds just over 2BarA boost on WOT, feel like it should sound different though, think I'm paranoid. :laugh:


I have 007P, pressure test holds fine.
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Offline fowler21

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #6 on: 06 July 2010, 18:48 »
found the problem, the turbo pipe to intercooler was hanging off :huh: all i did was refit and it was back to normal:D yay
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Offline Lewisf1988-DUB

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Re: Hissing sound when boosting? mk4 gti 180 bhp
« Reply #7 on: 09 July 2010, 16:43 »
dude get that sig sorted  :drool:
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