Bypass Valve Venting To Atmosphere?

[Minymurf]

So i have a HKS Racing Bypass Valve on my Supra and was wondering if i could use it as a Blow Off Valve to get that "tsssssss" sound. I can hear it atm when it vents back into my intake but its sounds kinda silly. The only thing i'm stumped about is the two hoses that connect to it.
The top one goes from the manifold tee's into the bypass valve and then tee's into the external wastegate and then goes down into the engine block somewhere. (i think?)
The other one goes from the bottom of the bypass valve tee's back into the intercooler pipe then goes down into the same place where the other one ends.

If i just unplugged the end of it and plugged up the intake hole will it run fine? or will i need to buy an actual blow off valve?



Thanks