I went for the mechanical boost gauge. Comes with very thin tubing as you can see in my previous pics. Was going to change it to better tubing at some point but it works perfectly.
Strange that there's no Procharger writing on mine though? Anyway, the loud air sound is coming from the main air intake. It's hard to explain what it sounds like. Maybe I should post a video. I sent an email to Lund with the datalog...we'll see what he says.It looks like you have the pro flow bullet valve "open" which is louder than the standard one. The standard one that come with the kits is the regular pro flow valve with an air filter on it.
https://store.procharger.com/WebDirect/Products/Category?categoryId=11
Thanks that's a great comparison video! See mine sounds all the time like it's blowing off but from the main air Inlet...not the bov outlet. My theory is that if it's stuck shut and ig the throttle body is closed, air is surging backward through the compressor and out the air filter. I borrowed a vacuum pump from my co-worker to test.
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If it turns out its no good let me know, I have a pro flow(non bullet style) that I will sell you that works perfectly.