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Adding the UPR check valve is just an extra layer of protection since the stock PCV valve is made of plastic versus aluminum like the UPR and I am sure it will not hold anywhere close to 100 psi of boost from entering the crankcase. No tuning or anything else needed to add the check valve into the line at intake. Just need to make sure of the ID of the hose you have on your catch canso you get the right size check valve.It does clear things up thanks. Does adding that valve affect anything else or is it just an extra layer of safety? Like would it need to be tuned for or is just slapping it in the inlet line good enough? Do you have a gutted pcv?
UPR Billet Check Valve 0-100psi Operating Pressure (uprproducts.com)
BD