Yandards 0 Posted July 17, 2015 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. Quote Share this post Link to post Share on other sites
Rustynuts 0 Posted July 17, 2015 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. Quote Share this post Link to post Share on other sites
sankysvr6 0 Posted July 17, 2015 (edited) 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 July 17, 2015 by sankysvr6 Quote Share this post Link to post Share on other sites
Yandards 0 Posted July 18, 2015 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! Quote Share this post Link to post Share on other sites
