Changed 2009 prius pcv valve after 96k miles

Well I finally installed new pcv valve that I purchased 6 years ago (part number 12204-21011).
I had put off installation due to the excessive removal of parts for access to pcv valve.
I removed the airfilter housing, relay box, loosened cable harness, disconnected injectors and spark coils.
Pulling loosened wire harness forward allowed access to pcv valve. There are some good youtube videos showing how to do it without removing cowling and window wipers.
I had to use a deep impact socket and a pipe wrench to turn the socket to remove pvc valve.

Anyway the pcv valve looked perfect after 96k miles. Probably because I've alway change/used mobile 1 5-30w extended performance synthetic oil at 4-5k mile intervals. I've owned the prius since new with only 8 miles on it. So I know the pcv valve was never changed till now.

The Old pcv valve rattles like the new one and seems to be good. With the new valve installed the prius runs much better.
Less misfires (displayed with torque apk). No more pinging. Smother gas engine starts and stops. More acceleration with less gas pedal depression. No more hesitation on acceleration.

I thought my prius was running great before I changed the pcv valve getting 50+ miles per gallon.
Now it runs even better.

The old valve blocks flow toward engine and allows flow away from engine. I suspect a new valve might block both directions depending on internal spring tension within pcv valve. I went to toyota dealer to purchase another new pcv valve so I could check if it allows flow away from engine.

Toyota says there are two part numbers for pvc valve for 2009 prius and they are out of stock on both.
Toyota wanted to know my vin number to provide the right pcv valve.
The two part numbers are 12204-21011 and 12204-21012. Dealer doesn't know why or what the difference is. My early model 2009 purchased in december 2008 uses 12204-21011 pcv valve.

 

1200 miles later after changing pvc valve and getting approximately 15% increase in ice output.

I'm trying to understand why the substantial increase in power to the point of being overly concerned.

I Thought my prius was running perfect before changing orignal pvc valve. Its now better than perfect!!!!
I am now worried that this large increase in ice power is adding much more wear and tear on my internal combustion engine. I have accually lost about 2mpg with the new pvc valve and increased the ice output.

I have tried to come up with many theories for the increase in ice power (excluding PVC) including but not limited to;

A; Fresh electrical connections to the spark coils and to the injector coils (after disconnecting and reconnecting them).
B; Cleaned some caked up dirt off the outside of the mass air flow module (orignal maf now has 97k miles).
C; Blew out Small amount of dirt from allready clean looking air filter.

If you change your PVC valve I would add a drop of oil from your dipstick into the bottom of new PVC valve (and shake).
I didn't do this. But occured to me that the pvc internal piston/slug could use some preliminary oil lubrication to make it last longer.. Its probably this piston/slug that wears out.

Being overly concerned with increased power, slight loss in mpg (2Mpg), additional engine wear. I decided to reboot all the computers/ecu's disconnect 12v battery) and let new fuel trims to be learned.

This reset/reboot of ecu's was about 300 miles ago and there is no difference still to much performance.

I guess the hessitations (and misfires) of the ice on the old PVC (which appeared to be in perfect condition) was a gas saver hehe.

My prius is driven mostly city miles, Doesn't burn any oil yet (might start burning oil now that engine is putting out more power). I was seeing 30 to 50 misfires per drive as seen on torque apk (couldn't fill it at all). Now I see one to three misfires on the torque apk (this is with orignal spark plugs 97kmiles old).

Summary the prius pvc valve is a precision part that does wear. lubricate (lightly) before installation!

 

Yes seat-of-pants feeling