Installed Oil catch can. Tore guts out of PCV and ran it from it to can to intake manifold, is this good to go will EMS act differently now that it is gone?
Thanks

 

You did install the supra PCV after gutting the stock one...right? Your post says nothing about it so I'll assume you didn't. It also doesn't say that you're boosted but I'm going to also assume that since you're posting in FI and talking about EMS and a catch can that you are booosted. Basically the stock PCV can't hold up to boost, which is why some people gut it and install a supra PCV ($3 or so at Autozone) since it is designed to hold boost. My stock PCV was blowing by so I did the Supra PCV. The reason you must have a PCV is simple...no PCV between the intake manifold and the valve cover = boost in crank case. BAD. Do a search on supra PCV and you'll find all you need...instructions, reasons, etc. Good luck! Oh...and it will not change anything in the EMS...

 

From my experiences the pcv myths out there are easy to fix.

Route ALL valve cover lines to a central (if possible) catch can.

Make sure that catch can is vented to atmosphere with a small filter or 3.

Cap existing lines on intake manifold if need be.

Done.

 

That's basically right...meaning it will work. Whether you use the PCV or not (Supra PCV or otherwise) it is best to not allow a straight line to the valve cover from the intake manifold b/c you do not want boost pressure finding it's way to the crankcase. Personally I kept the PCV b/c although I don't think your motor will blow up without it...it does seem like a good idea to have ventilation and leaving the line connected to the valve cover/intake manifold means that when you're in vac (most driving) it is sucking the fumes out of your crankcase and venting in fresh air. If you plug the line on the intake manifold then you will not get boost into the crankcase, but you also won't get ventilation. It's totally up to you, but don't leave the intake manifold and the valve cover connected with no PCV valve (really just a check valve) between them.

 

I use a supra PCV actually, works like a charm.

 

You don't need a pcv valve if you cap the manifold and vent the can.

 

I just got that!