2.5 bar @ atm, 1:1 to manifold from there - Saab Performance Bulletin Board - Saabnet.com
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2.5 bar @ atm, 1:1 to manifold from there
Posted by Chad B [Email] (more from Chad B) on Tue, 3 Jun 2003 17:50:05
In Reply to: Re: Question for experts on FPR, sean, Tue, 3 Jun 2003 14:47:37
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Basically with a 2.5 bar with no input from the manifold (vacuum line disconnected) the fuel pressure is 2.5 bar or about 36 psi. Then the input from the manifold affects the pressure at a 1:1 ratio. So at 10 psi of boost your fuel pressure is about 46 psi. The same goes for vacuum, such as at idle, the pressure in your fuel rail will be less than 36 psi. So the pressure drop across the injectors is always the same.
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