I'm interested in swapping my diverter valve with a blow off valve, more fun that way. I am wondering where and what type others have purchased for their RDX?

 

down below is a video I took after I added an intake on my RDX the bypass valve is much louder now that the intake is on.

 

I upgraded to a Turbosmart Dual Port bypass valve. I have a intake as well as a front mount intercooler system, and I found the factory bypass valve to be very annoying once i installed those parts. The dual port valve let's out a nice "pssshhhh" when letting off the throttle vs the full bypass which has a flutter to the sound that seems to resonate way louder.