HMF CONTROLLER FUEL OPTIMIZER 3/3,5

The HMF Optimizer is a Fuel-Injection Controller that has been pre-programmed with the proper tuning specifications for your HMF exhaust. You must retune your machine when you're adding an exhaust system, so not tuning your machine will void the warranty of your exhaust.  Pre-Programmed with the best settings for your HMF exhaustPush Button Interface Unique load based technologyPlug and Play InstallationNo CPU or Dyno NeededFull Range Tuning