Turbo spooling up sound
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Joined: Jun 2002
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From: Jupiter, Florida
Turbo spooling up sound
I dont know alot about turbos but I heard when you have a turbo on your car and you drive it hard it makes a sound when you shift with the turbo. Is this true? lol sorry for being dumb 
Joined: Feb 2001
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From: London, Ontario, Canada
There are two noises you will normally hear:
1. When you accellerate under boost, you will hear the turbo spool up. It sounds like a jet engine under your hood, just quieter.
2. When you suddenly let of the throttle, you will hear a "shhhhh". This is the blow off valve releasing excess pressure. If you have an aftermarket BOV which is vented to the atmosphere, that sould will be a LOT louder.
1. When you accellerate under boost, you will hear the turbo spool up. It sounds like a jet engine under your hood, just quieter.
2. When you suddenly let of the throttle, you will hear a "shhhhh". This is the blow off valve releasing excess pressure. If you have an aftermarket BOV which is vented to the atmosphere, that sould will be a LOT louder.
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Joined: Apr 2002
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From: Olympia, WA
With an aftermarket blow off valve you'll hear a woosh sound when you shift. The blow off valve is releasing pressure that is headed back towards the turbo when the throttle body closes. You may also hear the turbo spooling if you have an aftermarket air filter. Kind of a sucking sound.
I say aftermarket because most cars don't have cone filter on there turbos and there bov is often very quite or inside the intake. Feel free to correct me if I am wrong. Hope that helps, we aren't all gifted in turbo stuff right away. I am learning myself.
Steven
I say aftermarket because most cars don't have cone filter on there turbos and there bov is often very quite or inside the intake. Feel free to correct me if I am wrong. Hope that helps, we aren't all gifted in turbo stuff right away. I am learning myself.
Steven
Joined: Feb 2001
Posts: 29,798
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From: London, Ontario, Canada
Re: ?
Originally posted by BonsaiRX7
On ALL turbos will you hear this sound? Including the rx7?
On ALL turbos will you hear this sound? Including the rx7?
Matlock: Ever drive beside a TII in a quiet car? The turbo is quite noticable.
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Joined: Aug 2002
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From: Columbus, OH
Originally posted by Matlock
1.8t VW Passat never heard a thing. Just felt it!
1.8t VW Passat never heard a thing. Just felt it!
I don't know about you guys, but i just installed my "turbo kit" (http://www.sunamiturbo.com/ ), and my BOS (blow off speaker) sounds at about 5000 rpm... anyone else experience this with their turbo cars? Aaron, didn't you convert yours using a similar kit?
