I have breathers on both passenger an driver side valve covers. Is that recomended or what do you guy have?

 

On my N/A 6.0, I have -10 AN fittings on both valve covers and they run into a catch can.

My boosted 5.3 will have a similar setup, but I might vent the valley cover too.

What size holes do the filters you put on have?

 

I just put breathers where the the pcv was.

 

Thats the way I'm running mine. I get a little breeze of crankcase fumes every once in awhile but its no big deal. I just didn't want to mess with a catch can (sold mine) or a pcv with a built in check valve. I can't really find a drawback to running it this way, the engine gets to breathe however it wants and I have no chance of boosting my crankcase. Run it!

 

Yea i smell it too! I don't like it lol

 

Does your truck still have a MAF sensor?

Some people vent the valve covers into a catch can, then vent the catch can to the inlet side of the turbo. Still not sure whether or not it would contaminate a MAF sensor equipped engine...

 

I have the breathers on both sides, no problems so far.

 

May for about 2 more weeks until i can get sd tuned.

 

My dads race car had them hooked to the exhaust so it would pull it out. What about that

 

filters on both covers here for two years with no issues...