The Ugly Fix is an electronics chip maker that enhances the performance of EGR (Exhaust Gas Recirculation) in diesel engines of trucks. By plugging their electronic chip into the ECM (Engine Control Module), the chip stops the EGR function, resulting in improved engine performance. This includes eliminating issues such as hesitation, surging, coughing, and black smoke, as well as reducing engine vibration and turbo lag. The chip increases horsepower by approximately 75, which is typically lost through EGR. However, it is important to note that the product does not fix a broken EGR valve and requires the valve to be in working and clean condition for proper functionality. The Ugly Fix specifically targets EGR performance for Detroit Series 60 12.7 and 14 L 2003-2007 trucks, as well as C ISX ISM ISC ISL 2003-2010 trucks.