Perrin Turbo Inlet Hose
 

I've replaced my crap stock inlet cause it was tearing apart, so i got a Perrin Turbo Inlet hose and now the car idles too low. I've redone the process of removing and putting back, hoes's, inlet, and lines and yet it still idles and sometimes even turns off on lights. I've tripled check all lines, hoes, etc. I got a K&N short ram intake meaning the MAF sensor moves into a different position and can cause a small "too lean" thing but no matter but with the inlet it those it change anything in maps?

And does the BPV(stock) have pressure(hose hardens) between the inlet and BPV hose under acceleration?