Thread: EJ207 Owners?
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Old 02-05-2013, 01:32 PM   #5596
lukeskywrx
Scooby Specialist
 
Member#: 59837
Join Date: Apr 2004
Chapter/Region: SWIC
Location: Nor Cal
Vehicle:
2004 Spec-C Type RA
What MAF? -Speed Density!

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Quote:
Originally Posted by WRXt4cy View Post
Thank you for the detailed response. I read in a few in a few places the oem manifold mounted sensor was bad but no one could offer up a satisfying explanation as to why this was the case. I'll get the correct type of sensor and go that route.

I am curious though as to why you replaced the PCV valve connection on the manifold. Wouldn't you want to leave that intact to provide a strong vacuum to the crankcase?

The PCV only works at negative relative manifold pressure so the only time it is really doing anything is idle and very light cruising to decrease emissions. All other times vacuum is sourced from the turbo inlet so I am fine with my crank being a slightly higher pressure at idle and low throttle cruise as long as I get good vacuum at WOT.
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