Tuning Reliability & Repeatability: An Example of Individual Cylinder Fuel Trims

Engine Management Systems (EMS's) gives the tuner ability to adjust fuel and engine timing as well as various other parameters, all in the name of creating the most optimized tune for your engine. A fine tuning procedure not often used or offered by tuners is Individual Fuel Trim Correction and Individual Cylinder Timing Correction. Fine tuning individual cylinders will result in peak performance, reliability and repeat-ability. For this write up we focus on the Individual Fuel Trim Correction.