just installed my procharger on my 99 z28 and was vary easy but just one question.I have the proflow bypass valve,can you install it in eather direction or is there a certin way it goes.also when you close the butterfly you can still blow thruough it a little is that normal?

 

AS per the install manual they state that the inlet end is the end with the screw head in th butterfly valve

 

yes the blow-by is normal on the valve,it doesnt seal as tight as you might think

 

thanks guys.