Many factors (exhaust emission standards, weather and climate differences, taxing and sales policies, etc.) are forcing the vehicles to be released below their capacities by the manufacturer. So by optimizing the software with EcuFast performance tuning, up to 30% Horse Power and Torque Increase is possible within the safe limits of the vehicle. The power increase percentage depends on the vehicle and its engine, and we always aim for the most efficient and healthiest performance increase. To ensure 100% customer satisfaction and prove confidence in our software, Ecufast offers full refund within 15 days post application. Every customer, do have the chance to test their vehicle for 15 days, and if unsatisfied for whatever reason, can revert their vehicle’s software back to its original software at any of our dealers and have 100% refund.