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need advice please with this setup

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Old Mar 6, 2018 | 09:07 AM
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Default need advice please with this setup

hi everyone,not much of a poster do a lot of lurking and searching but could find anything about this with a definitive answer.

im doing this lq4 wit a s475 twin scroll and was wondering if my 50mm wasegate placement and size would be able to control boost properly.

do i need another? or should i join the other hotside?




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Old Mar 6, 2018 | 09:15 AM
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If you want proper boost control, you have to gate both banks, not just 1.
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Old Mar 6, 2018 | 09:22 AM
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Originally Posted by JoeNova
If you want proper boost control, you have to gate both banks, not just 1.
i figured that,should i get another gate or will the one 50mm handle both?
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Old Mar 6, 2018 | 09:25 AM
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50mm will handle both.
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Old Mar 7, 2018 | 02:11 PM
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On my setup 44mm gate on only 1 bank. I have had it on 2.5 psi with no creep issues at all, its an lq4 with on3 7875. So only venting 1 bank will work for most, YRMV.

However if i were you i simply add another pipe to the other bank and Y it in. Seems like that would be the best option for you and should nearly guarantee smooth boost control
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Old Mar 7, 2018 | 02:21 PM
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Originally Posted by Lsxford
On my setup 44mm gate on only 1 bank. I have had it on 2.5 psi with no creep issues at all, its an lq4 with on3 7875. So only venting 1 bank will work for most, YRMV.

However if i were you i simply add another pipe to the other bank and Y it in. Seems like that would be the best option for you and should nearly guarantee smooth boost control

thank you for the response i will "y" it in so i have nothing else to worry about
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Old Mar 7, 2018 | 02:22 PM
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Originally Posted by JoeNova
If you want proper boost control, you have to gate both banks, not just 1.
thanks for your help
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