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I originally had mine with the 3/4 plate, switched to the open plate and have been running it for years. I just did a H&C and am considering going back to the 3/4 plate to quiet it down just a tad...that is, unless anyone knows how much hp it loses
Who all generally runs the wide open or adds one of the plates to make the sound difference. Who likes the plates smaller and why?
DMH makes a cutout that fits where the adjustablw plate goes, and you adjust the noise inside the car with a switch. I have one and I am sure there is a lot more people on here that have it set up that way. Hope that helps.
I have the mid-sized plate on mine, very little rasp and it has a nice quality sound to it. The open plate sounds mean, but its loud in the car and it gets really raspy.