Engine tuning, once a celebrated hobby, has become a target of government regulation due to increasing concerns over emissions and environmental impact. It all began with the advent of the EPROM chip ...

Stock Car Racing: Engines prepped for start of NCS season The season will begin Saturday, April 17 , at North Central Speedway., ... IMCA Hobby Stocks, IMCA Sport Compacts, ...

They first dyno'd a bone-stock Three-Valve engine that serves as an R&D tool. In stock trim, with just a set of long-tube Kooks headers, the engine produced 313 hp at 5,500 rpm, while torque came ...