Same stock Hyosung GT250 - swapped the stock muffler for the new GoFastLoudly GFL250 muffler. 1 Horsepower gain = 4% power increase.
Channel: Autos & Vehicles Uploaded: February 4, 2008 at 2:54 pm Author: gofastloudly Length: 02:37 Rating: N/A Views: 2310 Tags: dyno gfl gofastloudly hysoung muffler
