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Old 10-31-2013, 03:49 PM   #1
///Audience
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Louding Hissing on acceleration

I've recently (since going stage 1+ uni) noticed a loud hissing sound upon acceleration. It seems to do it more often when the car is warmed up. I would say the sound is somewhere in between a pissed off snake and bacon sizzling. It's a smooth sound until I get to 3krpm and it starts to flutter. Once I let off the pedal, I get a loud 'whoosh' and it stops until I accelerate again.

I have a 2013 GTI w/ 2k miles. No other mods besides Unitronic tune.

Does this sound like a DV issue?
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Old 10-31-2013, 04:19 PM   #2
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Originally Posted by ///Audience View Post
I've recently (since going stage 1+ uni) noticed a loud hissing sound upon acceleration. It seems to do it more often when the car is warmed up. I would say the sound is somewhere in between a pissed off snake and bacon sizzling. It's a smooth sound until I get to 3krpm and it starts to flutter. Once I let off the pedal, I get a loud 'whoosh' and it stops until I accelerate again.

I have a 2013 GTI w/ 2k miles. No other mods besides Unitronic tune.

Does this sound like a DV issue?
its the dv doing its job. turbo spooling and the flutter is when you hit peak boost and you are actually boosting higher than requested so the oem valve bleeds some pressure to meet what the ecu is requesting which is set by the tune.
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Old 10-31-2013, 04:25 PM   #3
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Yeah that's normal. A lot of us like the sound >:]
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Old 10-31-2013, 04:30 PM   #4
///Audience
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Originally Posted by 2010_Jersey_GTi View Post
its the dv doing its job. turbo spooling and the flutter is when you hit peak boost and you are actually boosting higher than requested so the oem valve bleeds some pressure to meet what the ecu is requesting which is set by the tune.
Thanks for the info! Ive heard BOV's before (this is my first non-NA vehicle) but this sounded different. Perhaps a bit raspier than I was expecting spool up to sound like. I really want to get a boost gauge so I can make sure im not loosing pressure anywhere.
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Old 10-31-2013, 04:41 PM   #5
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Originally Posted by ///Audience View Post
Thanks for the info! Ive heard BOV's before (this is my first non-NA vehicle) but this sounded different. Perhaps a bit raspier than I was expecting spool up to sound like. I really want to get a boost gauge so I can make sure im not loosing pressure anywhere.
When do you get your boost gauge, dont be alarmed that the boost will fall off the higher you go in the rpms. The turbos simply cant flow high pressures at high rpm due to their size.

So, you'll see it spike to say 19 psi, it will level out to 17-18 psi and it will gradually fall to under 10 by redline. this is normal. the larger the turbo, the longer the boost can hold in the upper rpms.
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Old 10-31-2013, 04:55 PM   #6
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Intake?
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Old 10-31-2013, 04:56 PM   #7
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Normal turbo sounds.
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Old 10-31-2013, 10:15 PM   #8
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Quote:
Originally Posted by ///Audience View Post
I've recently (since going stage 1+ uni) noticed a loud hissing sound upon acceleration. It seems to do it more often when the car is warmed up. I would say the sound is somewhere in between a pissed off snake and bacon sizzling. It's a smooth sound until I get to 3krpm and it starts to flutter. Once I let off the pedal, I get a loud 'whoosh' and it stops until I accelerate again.

I have a 2013 GTI w/ 2k miles. No other mods besides Unitronic tune.

Does this sound like a DV issue?
i have a 2013 stage 1+ tune ...my oem dv now leaks...which is normal for these cars with a tune... i just got a new one ...

take a look...http://www.techsmartparts.com/Smart+...e/Content.aspx
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Old 10-31-2013, 10:38 PM   #9
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thats the sound of boost my friend
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Old 10-31-2013, 10:51 PM   #10
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Wrong forum I mean boost .
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Old 10-31-2013, 10:53 PM   #11
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This sound, in a long tunnel, back and forth to work daily is the highlight of my rush hour commute.
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Old 11-01-2013, 01:27 AM   #12
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sweet mother of boost
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Old 11-01-2013, 02:46 AM   #13
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