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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > N20 forge bpv turbo flutter
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      07-31-2019, 11:18 AM   #1
Tanawit
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N20 forge bpv turbo flutter

So guys I did something crazy. I put a bpv on the thing and now it turbo flutters. Is there anything I should be aware of?
Here's a vid
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      07-31-2019, 03:51 PM   #2
rjd_F30
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What is a BPV? Did you replace the diverter valve with a blow-off valve?
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      07-31-2019, 08:07 PM   #3
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from the looks of the pic you provided your missing alot of parts to the bpv
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      07-31-2019, 09:18 PM   #4
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Yeah, I am planning on purchasing the Forge recirculating valve. I downloaded the instructions and have read them several times. Obviously there arent any vacuum lines hooked up in your picture. I would hope you read the instructions.

And if you did, ensure that your solenoid is hooked up correctly and dont have any vacuum leaks.

Make sure your posi taps are good.

Forge tells you to splice in a vacuum tee on the brake booster. I am going to use a vacuum adapter from the intake manifold.
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      08-01-2019, 01:59 PM   #5
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Its normal to hear that sound with the Forge recirculating valve. I had Forge recirculating valve installed on my car and the Atmospheric valve installed.
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