I started using Knudsen's a few years ago after my car did not pass emissions. The dealership and another repair shop wanted between $400-$800 to get it to pass. I stopped by Knudsen's since their my neighborhood shop. Lyle and Todd tested the gas cap, intalled a new one, and $15 later I passed emissions. Now both vehicles call this place home. They are fair and take care of their customers. Thanks guys.