ZSA Motorsport

First, it was a toss up. GMG or Sharkwerks bypass. both seem like great companies. great products. i flipped a coin. sharky came up heads. installed it thursday. really really nice. what an improvement in sound! i drove one of the RS's wthout any bypass pipes bakc to back with the 3x Black death star and man, it was awsome. its kind of aggravating because it sounds SO incredible standing OUTSIDE the car , while its incredible inside the car, i almost wanted to pull up a chair and hang around my bumper and eat a sandwich and enjoy the harmony.

Alex called a few times to ensure all was good, which was really cool. Both GMG and Sharks exemplified the best in customer service. Jon from protosport in butler NJ did the install prefectly and cheaply. they are a great shop, i love using them. he had his own bypass pipes and made no effort to sell me on his, but did let me hear his. his sounded AWSOME as well. maybe im partially tone deaf but they both sounded incredible.
..... amazing.