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G60 Owners - What's you boost gauge reading at idle and where is it reading from?

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Hallo all,

 

Trying to work out what's 'normal' for boost/vac reading at idle on a G60.

 

If you could post up the idle figure you are getting from your boost gauge when the car is warmed up that along with where it gets that reading from that would be grand.

 

Little template below as a prompt:

 

Boost/vac reading at idle:

Idle speed:

Boost gauge connected to: MFA vac line/brake servo line/throttle body/somewhere else

Engine mods: Ported charger/smaller pulley/boost return bypass

 

Reason for the ask is my 16vG60 did have a vacuum reading of atmospheric pressure at idle - which is wrong and I am now getting around -1.5b, which may be about ok but still seems a bit low.

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Boost/vac reading at idle: -5 psi

Idle speed: 800 rpm

Boost gauge connected to: MFA vac tee'd line behind clocks

Engine mods: Stage 4 charger, big valve head, standard cam, flowed exhaust manifold.

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Boost/vac reading at idle: -0.5bar

Idle speed: 800 rpm

Boost gauge connected to: MFA vac tee'd line behind clocks

 

Same readings with plastic silencer, and a G60 ac outlet.

 

Car is totally stock

 

Also makes no difference if the engine is cold, or at normal operating temperature.

 

[ATTACH]82007[/ATTACH]

Edited by sankysvr6

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Ta so far, seems like my idle leak is still there just not as bad, having just driven the car for the first time since sticking it back together (again) its quicker than it used to be and sharper on the throttle.

 

Boost gauge is making a weird noise when coming off throttle mind!

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