BOV and BPV

[BW_00]

I’ve recently supercharged my IS200 and done it very DIY style, but managed to get the bypass valve set up, it all works now and I’m loving the extra power but I want to put a blow off valve on just for the noise, I can’t seem to find much information about adding a blow off valve to this supercharger set up but I know it can be done, my question is can you add the blow off valve as a replacement for the bypass valve or should they be used in conjunction with eachother, as without a bypass valve any air coming in through the BOV will be unfiltered, any information on this subject would be greatly appreciated, thanks.