I took off the Vortech filter due to it being extremely dirty. Im working on making a custom intake for it. Right now I have a breather filter hooked up to the pcv tube, and i put a fine screen over the charger intake. Now since doing that I am only seeing between 8-10psi at redline vs the 11 it should be making. I then took off the filter once to see what it would do and then it ran 11psi like when it had the filter on. So now Im lost. How is it that a screen which visually has more holes for air to travel though then a filter could it be causing a 1-4psi loss? Also could it be involved in anyway with the pcv valve having only a breather and no vacum or what that not matter?

 

perhaps while visually is appears to be more permiating for air to flow through it may just seem that way and the usual filter actually lets in more air?

 

anyone?

 

You say your only seeing 8-10 psi , but also saying 1-4 psi loss when you normally see 11psi? The pcv you refer to is it the hose on the driver side that connects to the filter, if it is this its a breather hose and should have no effect on boost. Several people don't even connect this and let it hang loose..Any difference could be as suggested a visual thing..

 

Yea the PCV is the tube that connects on the drivers side of the filter. I assumed that having just a breather on it wouldnt make a difference, but then the only thing Im left with is that the screen somehow is affecting the car.....Im lost ha.

 

Use a accurate manometer between supercharger input flange to measure the total restriction of tube and filter under WOT peak rpm.............normally 7" H2O restriction =~ 1/4 psi input restriction.

ebay often has great deals on Dwyer gauge manometers. 0>10"
Important to understand the translation between water column inch and psi:
1.00" H2O = 1/27.7 of a single psi, so water column is a finer resolution

 

....huh?