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Hello all, sometimes when I rev my RS Turbo between 3500 and 4500 rpm I hear a ' fluttering' type sound, difficult to explain, but it then goes away and all I hear is a smooth acceleration. Is this normal? Does anyone else know what I am talking about? It happens on smooth acceleration in 3rd gear, not hard acceleration in 2nd gear, i.e I don't have my foot to the floor, I am accelerating smoothly but purposefully. Any ideas, anyone?
Regards,
Ross


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ross,
are you still running the std boost solenoid?
If so, it could be the boost solenoid pulsating that you hear.
The std solenoid does pulsate.
Regards, rod.

----- Original Message -----
From: Ross <mailto:vecc@tpgi.com.au>
To: BC-BFLegacyWorks@yahoogroups.com
Cc: wrx@yahoogroups.com
Sent: Monday, April 02, 2001 6:21 PM
Subject: [BC-BFLegacyWorks] Fluttering

Hello all, sometimes when I rev my RS Turbo between 3500 and 4500 rpm I hear a ' fluttering' type sound, difficult to explain, but it then goes away and all I hear is a smooth acceleration. Is this normal? Does anyone else know what I am talking about? It happens on smooth acceleration in 3rd gear, not hard acceleration in 2nd gear, i.e I don't have my foot to the floor, I am accelerating smoothly but purposefully. Any ideas, anyone?
Regards,
Ross


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Rod, thanks for your advice. Where is the boost solenoid? More to the point what is it? What could I do to stop the pulsating?
Thanks
Ross

----- Original Message -----
From: Rod <mailto:melrod@optusnet.com.au>
To: BC-BFLegacyWorks@yahoogroups.com
Sent: Tuesday, 3 April 2001 7:35 AM
Subject: Re: [BC-BFLegacyWorks] Fluttering

ross,
are you still running the std boost solenoid?
If so, it could be the boost solenoid pulsating that you hear.
The std solenoid does pulsate.
Regards, rod.

----- Original Message -----
From: Ross <mailto:vecc@tpgi.com.au>
To: BC-BFLegacyWorks@yahoogroups.com
Cc: wrx@yahoogroups.com
Sent: Monday, April 02, 2001 6:21 PM
Subject: [BC-BFLegacyWorks] Fluttering

Hello all, sometimes when I rev my RS Turbo between 3500 and 4500 rpm I hear a ' fluttering' type sound, difficult to explain, but it then goes away and all I hear is a smooth acceleration. Is this normal? Does anyone else know what I am talking about? It happens on smooth acceleration in 3rd gear, not hard acceleration in 2nd gear, i.e I don't have my foot to the floor, I am accelerating smoothly but purposefully. Any ideas, anyone?
Regards,
Ross


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Ross,
the boost soleniod is situated on the suspension tower in the engine bay (looking at it from in front of the car with the bonnet open). It has a small hose coming into the top which comes from the inlet manifold. A hose going out the bottom to the pressure sensor, (located next to the solenoid). It's job is to open the wastegate at a predetemined pressure. As it gets close to opening it pulsates.
.........maybe it is not the problem.
Mine is diconnected and i use a bleed valve setup so i can run higher boost and also avoid wastegate creep.
I suggest emailing mrt and asking them if this could be the problem. below is the address to ask.
regards, rod.
ben@mrtrally.com.au






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