Thread: question about pcv

So ive got everything back together on my car from my gen v swap and Ive put the line from my l67 evap on the N* brass L. My question is about the PCV should i just run a breather or should i run a line from the nipple to the silicone coupler to make the pcv work. Ive heard that intercoolers will make it so you have to run a breather anyway which i plan on doing later on.

If you have a gen 5 with a N* throttle connect the nipple on back of gen 5 pointing straight up to the nipple in N*. You want to use metered air for PCV if you can, the car will idle better with computer measuring all the air entering engine.


This is what it looks like if you want to run gen 5 with Intercooler.

Originally Posted by sseilmnop

If you have a gen 5 with a N* throttle connect the nipple on back of gen 5 pointing straight up to the nipple in N*.

Here's this version.

OK so how should I set up my evap then?

Tough to know what you are up to based on the post and which parts you have.

Run the evap to a nipple in the adapter plate that is between the N* and the Gen V.

The adapter plate for the N* to gen 5 has a nipple coming out the front. That is where the evap is tied feed.

im doing a gen v swap on my 04 impala ss. The adapter plate doesnt have a nipple on it only the throttle body does. I ran a hose from the supercharger nipple to the brass one on the N*. I planned on using the original L67 evap since the supercharger i got had the evap blocked off already so i was wondering where to attach the evap line to.

What does your adapter look like?

I have drilled the adapter when it didn't have a hole/nipple and then picked up a nipple at the local parts place or flared a 3/8 tube and inserted it.

my adapter looks just like that but no brass L on it. Also the nipple is on the opposite side of my N*

PCV goes in after maf and IIRC before throttle plate. The evap goes in after both.

if you flip the adapter plate and N* upside down you can use the genV evap, thats what i did and it works well.

well i ended up doing what bill said and found a brass plug at a local hardware store and tapped the adapter. We will see how it turns out tomorrow when my pcm gets back and i fire her up!