[ga9213]

For those with a boost gauge or torque or similar app, what vacuum do you pull idling and driving?

I'm showing about -1.5 in/hg which is far less vacuum than other vehicles I've had. Is yours showing similar or do I need to start looking for a vacuum leak?

[freshxdough]

Originally Posted by ga9213

For those with a boost gauge or torque or similar app, what vacuum do you pull idling and driving?

I'm showing about -1.5 in/hg which is far less vacuum than other vehicles I've had. Is yours showing similar or do I need to start looking for a vacuum leak?

At idle there is almost no vacuum. 20-50mbar vacuum. These cars use the valvetronic for throttling the air into the cylinder, not necessarily the throttle body valve. In this instance you don't have vacuum filling the entire intake manifold. This creates better throttle response and also reduces pumping losses. If your car has no fault codes and is operating properly then you're fine. Don't look for problems if your car is not exhibiting problems.