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ThunderMax 50 ECM with Auto Tune Closed Loop System

Manufacturer Part Number 309-375

J&P Part: 402-459

1 Reviews

This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

  • ThunderMax 50 ECM with Auto Tune Closed Loop System
Product may vary from photo(s).

$899.99

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1 Reviews

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Out of Stock in Retail Center Anamosa, IA
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Description for ThunderMax 50 ECM with Auto Tune Closed Loop System 

How Auto Tune Works

ThunderMax 50 ECM with Auto Tune Closed Loop System

Fitment Note: Only fits 2008-10 Big Twin with 96" engines (except Throttle-By-Wire Models and FXDF).

• Have full control of your EFI system, freedom to make major and minor adjustments without a master’s degree in electronics and computers

• CARB-approved, 50 State street legal including California, Closed Loop System - ARB Executive order # D-644

• ThunderMax is a completely new product that replaces the factory module, not an add-on box or signal modifier

• Purpose-built to deliver uncompromising performance but you don‘t have to be a rocket scientist to install it, program it or make adjustments

• As simple as we’ve made it to install and use, don‘t be fooled into thinking that this not one of the most sophisticated systems you can buy for your Harley

• Using the supplied SmartLink software and communication cable, you can adjust or monitor virtually every parameter of the system

• The ThunderMax makes sense in the long run as the system can grow and change as your engine does - just load a new map

• ThunderMax software, firmware and maps updates are free and accessible 24/7 with an Internet connection so you‘re only a mouse-click away from the latest available data and product support

• Backed by a 3-year manufacturer's warranty

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

Product Specs

Manufacturer Part Number: 309-375

Open or Closed Loop: Closed

Sold in Units: Each

Warehouse Part Number: 1036575

With/Without 02 Sensor: With

Fitment for ThunderMax 50 ECM with Auto Tune Closed Loop System 

This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

Fitment Note: Only fits 2008-10 Big Twin with 96" engines (except Throttle-By-Wire Models and FXDF).

Click (+) to view all compatible models

Harley-Davidson® Models

Dyna Low Rider FXDL : 2008–2010
Dyna Street Bob FXDB : 2008–2010
Dyna Super Glide Custom FXDC : 2008–2010
Dyna Super Glide FXD : 2008–2010
Dyna Wide Glide FXDWG : 2008, 2010
Softail Cross Bones FLSTSB : 2008–2010
Softail Custom FXSTC : 2008–2010
Softail Deluxe FLSTN : 2008–2010
Softail Fat Boy FLSTF : 2008–2010
Softail Fat Boy Lo FLSTFB : 2010
Softail Heritage Classic FLSTC : 2008–2010
Softail Heritage FLST : 2008–2010
Softail Night Train FXSTB : 2008–2009
Softail Rocker C FXCWC : 2008–2010
Softail Rocker FXCW : 2008–2009
Softail Standard FXST : 2008–2010

Customer Reviews for ThunderMax 50 ECM with Auto Tune Closed Loop System 

Overall Rating:
5/5 based on 1 rating

5 by

Unbelievable tuning all in less that 10 minutes. Was only able to load stock base map, when I had BUB 7 2 into 1, Arlen Ness Big Sucker Stage I filter. T-Maxx rocks and adjusted from Base map to may set up with no issues.

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Important Product Notes

This item cannot be returned once the package is opened. Manufacturing defects must be addressed through the manufacturer directly. EPA Note: Requires exhaust system equipped for or modified for use with oxygen sensors Legal in California only for racing vehicles which may never be used upon a highway.

Shipping Note

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

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