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Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. Featuring H.I. - Human Intelligence.
my truck idles fine in park but backfires when i shift into drive, theres a large hole in the muffler, if i replace the muffler will the backfire stop? does a large hole in the muffler create a popping or backfire sound?