The results of sound level testing at Auto Club Dragway in Fontana indicated that Blown Roots combinations with Zoomie Headers are over the track's decibel level limit for 2014.
Therefore, the Blown Roots combinations with their current exhaust configuration will not be able to run in NMCA WEST Pro Mod Competition at the three Fontana events. They will be able to compete without any issues at both Pomona and Las Vegas.
"The Pro Mod Class will still be contested at the three Fontana events with Turbo, Naturally Aspirated, Nitrous, and Centrifugal Supercharger combinations," said Rollie Miller, National Event Director at NMCA WEST.
Miller added, "If Blown Roots Blower combinations can modify their exhaust and come in under the 85db limit, they may compete at Fontana in NMCA WEST Pro Mod. John Scialpi is currently working on several header and exhaust baffle/muffler combinations with Flowmaster and will attempt a sound test in coming weeks to see if any of his combinations will adhere to the decibel limit."
If any Pro Mod competitors have questions regarding this situation, please contact Rollie Miller at ProMedia headquarters by calling 714.444.2426 or by email to firstname.lastname@example.org.