A centri blower will scream at idle. I idled my car at 800rpms with the blower and you had to scream over it when the hood was off. Generally the lower you idle your motor with a centri blower the louder it will be at idle.
Maybe the twin screws dont scream at idle, I dont have any personal experience with them. I do know that for the money I'd rather have a centri blower or turbo. $5k for the KB blower mentioned, or a $5k turbo kit or centri blower kit. For $5k you can get a ProCharger F2, or a turbo kit like mine with an even bigger turbo to make similiar power. I bought a PT76GTSHP turbo, good for about 1250bhp. Either of the two I mentioned will take you into the 8's in the 1/4 mile, if you have the rest of your shit together. The big ProCharger is good for 7's and with a turbo upgrade to my kit I could make the same kinda power..if I had the rest of my shit together
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I think a bored/stroked 3v with a F2 would be a badass, but the noise would be too overwhelming on the street for me personally. So swap the F2 for a PT101 or similiar with full exhaust and hang on. Just keep the throttle action light. Some people love the whine of a blower, its just too loud for my taste.
To be completely honest with you though, and no offense intended to the thread starter..you may wanna start with a little less. Thats why I bought an S-trim before a big turbo..the torque curve was more street friendly, and it was cheaper. The power and torque added by boost is addictive. But if your not used to it and dont know what to expect it will kick your ass. I'd just hate to see you god forbid loose control of a car like you are talking about. Maybe you would be interested in starting off with a Vortech SQ-trim centri blower and 6-7psi or whatever the "stock" setting is. The SQ is supposed to be much more quiet, also it is a great entry level blower. Just a suggestion from someone who has been there, the S series blower are great for a first taste of boost. I was shocked when I took my car for the first ride under boost.
