[4pipes]

Laguna Seca's requirement of 92dB is by far the most stringent. They also measure it in a area that seems to amplify the effective sound. Pretty much a non starter for a Cobra replica. I was black flagged a couple of times in a stock Italian car. BTW, I agree with the above statement of Thunderhill....easy to meet 103dB. I've never had a problem with my Kirkham.