Where you pour the oil into the engine there is a little splice coming off the neck. Mine is hooked up to nothing and thus air is free to come and go as it pleases. I think this might be the cause of my weird oil pressure readings. My car has significan work (converted to non-sequential twins) and I think it may have been disconected for a reason. What did it used to connect to? Should I leave it alone or try and plug it? Is there a good way to close it up if so?

 

Sorry about the double post. I cant delete the other thread. I did some reading and it seems that my bad oil pressure readings are probably from both my sensors going out. The light will come on and off randomly and I can usually kick it off by jerking the car around or do a quick romp on the gas. The gauge will work half the time, showing perfect readings, then the other half sit on 0 and move very little despite throttle position. Still, I want to know what that splice off the filler neck is for.

 

Break out the vacuum diagram because it routes in to the rats nest.

 

I guess I'll just leave it alone. My car is converted to non-sequential.

 

the lower nipple goes to the intake elbow on the primary turbo. the upper nipple goes to the PCV valve. Neither are required in your case. I would plug them & not vent them.

They are in the nonpressurized section of the oil system, so they will not effect oil pressure or readings