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I have Beyea Headers on my crate car. My track now requires mufflers. Which muffler is the quietest,but most efficient? Car cannot be louder than 100 Db
Extreme Mufflers in Ventura, CA work great. Will get our 422 SBC under the state 95 db @ 100 foot rule and flow really well. Here in CA we have a state db limit and they did a lot of research into them....
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