2002 FLSTCI backfire

Discussion in 'Engine, Fuel and Exhaust' started by tbear, Feb 25, 2008.

  1. tbear

    tbear New Member

    Hello, this is my first post. I was cruizing at about 70 mph with my 2002 FLSTCI running great when it suddenly began to backfire. There is no backfire at idle or during acceleration, but backfires severely at constant throttle. The only modifications are a Stage 1 and V&H Big Shots. Any ideas would be appreciated.