divertor

I was told that the 20v Turbo lump doesnt run properly with a blow off valve on, and told a replacement divertor valve was the only way to go, but from what ive been reading on here, and with Forge producing new BOV's, im under the impression that they can run on them?? Help would be...

HAs anyone ever tried one of these ??? Supposed to vent 60% to atmosphere and 40% to recirc to keep the maf happy !!