HMF Optimizer 3/3.5 Fuel Injection Controller Yamaha Grizzly 700

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 exhaust
• Push Button Interface Unique load based technology
• Plug and Play Installation
• No CPU or Dyno Needed
• Full Range Tuning