The Mustang Forum for Track & Racing Enthusiasts

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  1. Elegant solution to keeping exhaust valves closed on noise limited days

    Has anyone tried this on their 350/R? Saw someone in a FB group say he pulled the exhaust valve relay from the engine compartment fuse box and this kept the valves closed and the 350R was able to pass sound at Laguna Seca (90 db).EDIT: this "solution" appears to defeat all drive modes, which...
  2. GBoss7500

    Laguna Seca 90db sound limit

    Hi all and happy new year,I will be running my 2012 Boss at Laguna April 30 with NCRC. Current setup is GT500 mufflers and open side pipe baffles. Anyone know from experience if this will pass or exceed the 90db limit?Thanks!