Johnson High Tech Performance pumps are designed and produced to tolerances that make them exceptionally efficient compared to similar pumps. Most importantly, every Johnson Pump is manufactured from the highest quality materials and machined to such close tolerances that customers are often unaware of the superior pumping efficiencies they realize from our products. These performance gains are especially noticeable at elevated operating temperatures, when the pump’s performance actually increases. This is in sharp contrast to our competitor’s pumps that generally deteriorate in pumping efficiency in extreme use environments, such as racing engines. Ultimately, these advantages translate to greater horsepower and reliability from your race engine.