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Discussion Starter #1 (Edited)
Hi All

Anyone know or wants to have a guess on what the vacuum is on a Alfa 3.0 v6 plenum when the throttles closed / on idle . :)


im ordering some parts which includes bov spring so i need to work out what spring to order (cars not running at the moment) so i cant test it.

A rough guess will do . as i want to know if it will open with a 11 psi spring (as its the cheapest and most popular).

Turbo waste gate is set to 8-8.5 psi so i need the vacuum to give me 3.5 psi of suck for it to open
 

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Discussion Starter #3
Thx gertie your the man.
 
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