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twin turbo boost levels

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Old Sep 28, 2005 | 07:21 PM
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Default twin turbo boost levels

i dont know why i didnt think of this till now, but ive got a twin turbo setup im going to be firing up in the next couple of weeks...and just had a thought, if im running 7lb springs in each wastegate...will this result in 14lbs overall?
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Old Sep 28, 2005 | 07:35 PM
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im not sure, cause i have 2 waste gates and will be running a minimum of 11.6 lbs of boost(not sure on the spring pressure rating)
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Old Sep 28, 2005 | 07:47 PM
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You'll get 7psi if they are adjusted equally to open at 7lbs. I used a mighty vac on mine to get them equal.
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Old Sep 28, 2005 | 08:20 PM
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I think ya will get boost creep from 7 psi. With only a 355ci engine and two t70's it will be tough to keep the boost that low. Cant wiat to see what that turns out. GL

John
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Old Sep 28, 2005 | 08:27 PM
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I use nine pound springs with my TT setup and make 9-9.5ish without using my boost controller.

Mark
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Old Sep 29, 2005 | 10:20 AM
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i wasnt planning on running 7psi, just using that as an example....ill probably start out with the 10lb springs
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Old Sep 29, 2005 | 11:24 AM
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You will get 7psi if the gates can bleed that much down.
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Old Sep 29, 2005 | 01:04 PM
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twin turbos give twice the boost?

myth busted
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Old Sep 29, 2005 | 08:56 PM
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Your wastegate is operated off your manifold pressure usually, so when your manifold pressure reaches 7psi it will start opening both gates at the same time.
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Old Sep 29, 2005 | 10:14 PM
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I am running twin turbonetics wastegates and 9 lb springs. My eboost shows exactly 9 psi at WOT. Just make sure you have the wastegate adjusted properly.
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