Here at HOT BIKE, we strive to stay on top of the most innovative parts to hit the American V-twin industry, so we're bringing you a new tech piece entitled "First Look." With this series, we will search out the newest parts and get you the inside scoop on what they are and how they work. Then we will follow up in a future issue by actually installing the part(s), explaining the install process, and giving an evaluation.
Zipper's Performance Products offers EFI kits and parts including throttle bodies, air cleaners, FI nitrous systems, and ECMs, as well as its new AutoTune module for any displacement and motor combination. The new ThunderMax AutoTune module adjusts AFR (air/fuel ratio) at all rpm and throttle positions through the feedback from two wide-band oxygen sensors placed in the exhaust pipes near the heads. The AutoTune Module works with the ThunderMax EFI controller to create a wide-band closed-loop EFI system that automatically adjusts fuel and ignition requirements due to performance upgrades such as pipes, an airbox, and cams. One of the best features is the ability to have closed-loop FI on your older Magneti-Mareli (MM) or Delphi system.
The ThunderMax EFI system is a joint development and distribution project between two industry leaders: Zipper's Performance Products and ThunderHeart Performance. Zipper's Performance Products is a leading developer and producer of engine kits and performance components for the H-D aftermarket industry. ThunderHeart Performance engineers, designs, and manufactures high-technology systems and components for the motorcycle industry. The company is committed to developing and improving the best engine-management and fuel-injection products in the industry, along with having a dedicated staff with outstanding customer support.
The Zipper's ThunderMax EFI is a complete, stand-alone ECM for all '02-present Delphi-based open- and closed-loop EFI Harleys. ThunderMax EFI simply replaces the factory O.E. system. The same technology is also available for all MM-based H-D '97-'01 EFI-equipped motorcycles.
When design began on the ThunderMax EFI controller, the engineers had one goal in mind: to overcome the limitations of the stock system. The ThunderMax EFI eliminates the requirement of any add-on tuning products and was developed with complete versatility in mind. The system utilizes a very fast and powerful computer processor that allows a higher resolution of tuning points than any of the other popular add-ons. These points of adjustment are addressed during the creation of the base maps and are the key to unlocking a bike's potential.
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The ThunderMax Marelli EFI conversion kit contains the ThunderJet EFI throttle body and ma
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The ThunderMax Auto-Tune Module works with your pre-'07 ThunderMax EFI controller to creat
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The ThunderMax AutoTune module adds closed-loop operation to your ThunderMax EFI module.