So I finally got around to jumping starting my car and driving it for the first time in a week. Runs and drives fine except I am seeing my idle hover around 1000 RPM, as opposed to the normal 800 when warm. I also see boost pressure at idle indicating around -7.0 to -7.5 psi as opposed to the normal -0.7. This all happening at the same time I notice a worsening of a hiss coming from the valve cover PVC diaphragm (back passenger side corner of the valve cover).

I suspect these are all related and I should just replace my valve cover. Just wanted some second opinions.

 

If N14 try checking the PCV line, it does sound like you've a leak somewhere.

 

Check the pcv tube. Does it idle rough? Might not be a big enough leak yet to make it run rough. I blocked mine, 6000 miles no issues. I got the plugs from ECS for 25, this was for 2 of them.




I didn’t have my scanguage before I did this, but I know know at idle I see about the same boost pressure you are now seeing.

 

Not N14. It's an N18

 

sounds like you need to replace the pcv then. Sorry my post is of no help I’m running N14.

 

Update on this issue. Just replaced my battery because I got a dud from autozone that wasn't holding a charge and would die in an hour. New battery fixed most of the issues. Still getting the hiss from the diaphragm area so I'll probably replace that.