I think the valve is electronic (though I may be wrong) and not sure if there's much you can do beside install an aftermarket intake.
BOV/BPV... Whatever you want to call it, its doing the same job. I does not vent boost to atmosphere or to the intercooler, it vents boost pressure from the compressor housing to the air inlet on the compressor housing every time the intake manifold sees vacuum. Also, I can assure you it is not electronic, its 100% mechanical.Also the Cruze is equipped with a BPV not a BOV. It's a bypass valve, which I think but not 100% sure it basically sends a portion of the boost to the intercooler during shift change, and some to the atmosphere. It is electronic so not sure how to bypass it with a BOV. I have read somewhere you can run a BPV and BOV together with great success if done right. BOV will blow off low pressure boost, and BPV will "recycle" High Boost.
I have been doing a lot of research on Turbo's since I bought my car back in February.
The company that makes the direct replacement BPV for the Cobalt SS is Forged Motorsports, I don't know about it being any louder than stock but I can hold higher boost pressure. It might actually work on our cars, it is the same design but the size might me different.The turbo bpv is not to be removed!!! All the cobalt SS guys who blocked theirs off and put an aftermarket bov on, has had nothing but problems. There is a company who does make louder bpv's, and I don't think they had problems with them, however, I doubt that it would fit in our tinyass turbo.