Madaz wrote:Big wrote:Mattman wrote:My m90 had the bypass built into it.
The valve works so that when you are not making boost ie at cruise the valve opens which allows the charger to be bypassed. When you are boosting the vacuum goes away and the charger is used.
Matt.
What I thought BUT the valve is charged by vacume at all times( supply from before charger inlet).. so I cannot see how it would be able to be closed at boost..as it is always vacume fed..
The vacume line that feeds that bipass valve needs to be
taken from the inlet manifold after the supercharger. It needs toget boost pressure
Ah Haa.. Thnx Tim.. I was thinking that was the case..but I couldn't get a definitive answer online searching etc..