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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 05-28-2009, 10:14 PM   #21
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Quote:
Originally Posted by fluke View Post
You up the boost, you up the flow-rate and inertia of the turbo. On the downshift you have to vent more air, if the BOV doesn't flow enough you surge.
he has the rfl it will flow it the setting or spring he has in it just sucks for how much psi he is running
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Old 05-29-2009, 01:34 AM   #22
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Quote:
Originally Posted by fluke View Post
You up the boost, you up the flow-rate and inertia of the turbo. On the downshift you have to vent more air, if the BOV doesn't flow enough you surge.

This is on normal upshifts, partial throttle lifts, etc. Part throttle is bad surging but sometimes it vents. 12+ is a high pitched whoosh from the filter, which I'm assuming is also surge, but it is not the turkey call flutter I've heard before.


I just recently started, I need to get a video.

Last edited by miatamania; 05-29-2009 at 01:47 AM.
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Old 05-29-2009, 09:12 AM   #23
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Originally Posted by miatamania View Post
This is on normal upshifts, partial throttle lifts, etc. Part throttle is bad surging but sometimes it vents. 12+ is a high pitched whoosh from the filter, which I'm assuming is also surge, but it is not the turkey call flutter I've heard before.


I just recently started, I need to get a video.
My mistake, I thought upshift and wrote downshift (where you're typically making no boost), shouldn't surge there.

On the upshift you can be at full boost when you lift off the throttle and abruptly stop airflow, which surges if not vented.
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Old 05-30-2009, 01:02 AM   #24
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Ah, k I see what you mean now.

I took the EBC off and its still doing it at 7 psi. Time to start the list for a bunch of parts.
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