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Port on top of throttle body, does it need to be plugged?

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Old 05-03-2009, 01:09 PM
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Default Port on top of throttle body, does it need to be plugged?

So ive had a ton of boosted setups over the years, and never had this plugged, but i was doin some pressure testing and found that this port will allow boost to exit the setup, but its before the throttle plate. My buddies car was running like complete dick and had that capped and we took that off and it ran better for some reason, so should it be plugged or not?

Old 05-03-2009, 01:33 PM
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Default Re: Port on top of throttle body, does it need to be plugged?

i welded mine shut..
Old 05-03-2009, 01:57 PM
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Default Re: Port on top of throttle body, does it need to be plugged?

it needs to be plugged, otherwise, under boost, you have a leak, on an NA setup its fine beacuse its before the TB
Old 05-03-2009, 03:59 PM
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Default Re: Port on top of throttle body, does it need to be plugged?

heavy rubber vacuum cap with zip tie.
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