IDLE SPEED VALVE, CLOSED Options

[timdog1720]

Quick question I know the idle speed is suppose to regulate the air flow when throttle is closed, But does it stays somewhat partially open when boosting?
in other words when I take the hose off from the air filter and place my finger near it to feel for vacuum during idle , I get a good vacuum... NOW when I rev the car I'm thinking I should get some kind of boost ooooor nothing ... for me it maintains a vacuum even rev it to 5000rpm.

i ask this cause I want to know if this serves as some sort of boost leak cause technically when the throttle is open and pressurizing the system, if the idle air control stays somewhat open wouldn't it just leak out through the valve back to the turbo which would seem like a leak?....

Please help me out on this one one and a half year going and still trying too figure out why my car is dumping super amounts of fuel.....

Thanks always guys

[delusionz]

I posted something about this before with pictures

There will be an ever slight boost leak through there, if you pull it apart and see what its made of, you'll see that the valve has no way of sealing (two metal surfaces) only just by ultra tight clearances, so if any oil/grit/gunk is stuck in there, the valve wont operate properly.

yes, i was able to blow through it while holding the door completely shut even after cleaning it, so what I did was put a large one way valve to go back to my air filter pipe.

this small leak wont matter if its securely attached to a pressurized part of your system, but i have mine going back to the non pressurized part, hence the one way valve.


taking air from the pressurized pipes isnt a bad thing, it can be a good thing,

would make less tututututututu on throttle liftoff

AC idleup takes air from pressurised pipes...

[timdog1720]

I posted something about this before with pictures

There will be an ever slight boost leak through there, if you pull it apart and see what its made of, you'll see that the valve has no way of sealing (two metal surfaces) only just by ultra tight clearances, so if any oil/grit/gunk is stuck in there, the valve wont operate properly.

yes, i was able to blow through it while holding the door completely shut even after cleaning it, so what I did was put a large one way valve to go back to my air filter pipe.

this small leak wont matter if its securely attached to a pressurized part of your system, but i have mine going back to the non pressurized part, hence the one way valve.


taking air from the pressurized pipes isnt a bad thing, it can be a good thing,

would make less tututututututu on throttle liftoff

AC idleup takes air from pressurised pipes...

ok kewl