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ThunderMax Self-Tuning Fuel Management System

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  • ThunderMax Self-Tuning Fuel Management System
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J&P Part: 803-458


ThunderMax Self-Tuning Fuel Management System

• Easy to install and simple to use

• Increased engine performance and rideability

• Cooler and smoother running engine

• Adjustable idle speed and rev limiter control

• No dyno required - automatically tunes for riding style and conditions

• Accommodates bike modifications (exhaust pipes, camshafts, etc.)

• Made in the U.S.A.

• 3-Year factory limited warranty

• Includes: ECM module, 18mm oxygen sensors with connection harness, USB cable, TMax Tuner software disc, and user/installation manual

Made In The USA This product was proudly made in the USA

Product Specs

Manufacturer Part Number: 309-563

Open or Closed Loop: Closed

Sold in Units: Kit

With/Without 02 Sensor: With


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Click (+) to view all compatible models

Harley-Davidson® Models

Softail Breakout CVO FXSBSE : 2014
Softail Breakout FXSB : 2014–2016
Softail Deluxe CVO FLSTNSE : 2014–2015
Softail Deluxe FLSTN : 2014–2016
Softail Fat Boy FLSTF : 2016
Softail Fat Boy Lo FLSTFB : 2016
Softail Fat Boy S FLSTFBS : 2016
Softail Heritage Classic FLSTC : 2016
Softail Slim FLS : 2016
Softail Slim S FLSS : 2016
Touring Road Glide Ultra CVO FLTRUSE : 2015
Touring Road King CVO FLHRSE6 : 2014
Touring Street Glide CVO FLHXSE : 2015
Touring Ultra Limited CVO FLHTKSE : 2014–2015

Important Product Notes

This item cannot be returned once the package is opened. Manufacturing defects must be addressed through the manufacturer directly.

Shipping Note

Due to state regulations we cannot ship this item to the state of California.

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