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ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System
Made in U.S.A.
61 Reviews

ThunderMax ECM With Auto Tune Closed Loop System

$1,088.95

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J&P Part #:  126-885
Mfr Part #:  309-382

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ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System

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ThunderMax ECM With Auto Tune Closed Loop System

ThunderMax ECM With Auto Tune Closed Loop System

$1,088.95
Order in the next to ship today

Product Details

Description

Description for ThunderMax ECM With Auto Tune Closed Loop System

• ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness

• Utilizes wide-band O2 sensors and works as a closed-loop control system to continuously self-adjust and properly tune the motorcycle’s air/fuel ratio for all riding conditions

• Easy installation: replace the factory ECM, install new O2 sensors and harness, load the correct map for your bike, and ride

• Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User’s Manual, technical support and free software and updates

• Hundreds of maps available to download for your bike (based on model, engine size, exhaust system air cleaner, pistons, cams, etc.) load the map of your choice and the integral auto-tune will do the rest

• Improves throttle response, exhaust sound and driveability

• Does not require dyno tuning

• Rider can adjust idle speed, rev limit and speedometer calibration

• Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup maps

• Works with all popular exhaust systems and is compatible with high-performance camshafts

• Supports turbo, nitrous and supercharger applications

• Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation

• New maps, software, firmware updates, map analysis and tech support available online at no charge

• Will require the use of an exhaust system with 18mm sensor bungs or head pipes must be modified to accept 18mm sensors

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ThunderMax ECM With Auto Tune Closed Loop System
Specifications

Product Specs for ThunderMax ECM With Auto Tune Closed Loop System

Manufacturer Part Number:
309-382
Open or Closed Loop:
Closed
Sold in Units:
Each
Warehouse Part Number:
1001868
With/Without 02 Sensor:
With
Fitment
Fitment Note:

Will require the use of an exhaust system with 18mm sensor bungs or head pipes must be modified to accept 18mm sensors.

Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

  • Harley-Davidson®

    • Dyna Fat Bob FXDF : 2012–2017
    • Dyna Low Rider FXDL : 2012–2017
    • Dyna Street Bob FXDB : 2012–2017
    • Dyna Street Bob FXDBB : 2015–2016
    • Dyna Street Bob FXDBP : 2013–2016
    • Dyna Super Glide Custom Anniversary FXDC : 2013
    • Dyna Super Glide Custom FXDC : 2012–2014
    • Dyna Switchback FLD : 2012–2016
    • Dyna Wide Glide FXDWG : 2012–2017
    • Softail Blackline FXS : 2012–2013
    • Softail Breakout FXSB : 2013–2014
    • Softail Deluxe FLSTN : 2012–2015
    • Softail Fat Boy Anniversary FLSTF : 2013
    • Softail Fat Boy FLSTF : 2012–2015
    • Softail Fat Boy Lo Anniversary FLSTFB : 2013
    • Softail Fat Boy Lo FLSTFB : 2012–2015
    • Softail Heritage Classic Anniversary FLSTC : 2013
    • Softail Heritage Classic FLSTC : 2012–2015
    • Softail Slim FLS : 2012–2015
    • Softail Standard FXST : 2012–2015
    • Sportster 1200 Custom XL1200C : 2014–2019
    • Sportster 1200 Custom XL1200CA : 2014–2016
    • Sportster 1200 Custom XL1200CB : 2014–2017
    • Sportster 1200 Custom XL1200CP : 2014–2016
    • Sportster 1200 Forty Eight Anniversary XL1200X : 2018
    • Sportster 1200 Forty Eight Special XL1200XS : 2018–2019
    • Sportster 1200 Forty Eight XL1200X : 2014–2020
    • Sportster 1200 Iron XL1200NS : 2018–2020
    • Sportster 1200 Roadster XL1200CX : 2016–2020
    • Sportster 1200 Seventy Two XL1200V : 2014–2016
    • Sportster 1200 SuperLow XL1200T : 2014–2017
    • Sportster 883 Iron XL883N : 2014–2020
    • Sportster 883 Roadster XL883R : 2014–2015
    • Sportster 883 SuperLow XL883L : 2014–2019
Product Notes

Important Product Notes

Not legal for sale or operation in the state of California. Check with the U.S. EPA and your respective state and local regulations to confirm emission compliance. 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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Product Videos

Ratings & Reviews

Help Customers Understand This Product

4.9
61 Reviews
Rating Breakdown
5 stars
56
4 stars
4
3 stars
1
2 stars
0
1 star
0
November 11, 2022
Absolutely fantastic! My bike runs 100% better now. Smoother, more power. and easy install!
-SEAN
November 8, 2022
Never received 500 emails to fix this still no resolution Beyond dissatisfied
-CHAD
October 31, 2022
best money i have ever spent , has worked flawlessly for the past 3 years , improved performance & fuel mileage .
-jtmeiner
October 26, 2022
I started using ThunderMax since they first cam out in my 2006 Street Glide unbelievable performance gains and drive ability!! Number go to for my customers!!!
-MARK
August 30, 2022
Was running an FP3 on my 2020 FLHXS w/ a S&S 475 cam and Bassani 2 to 1 pipes. The FP3 couldn't keep up and Vance Techs maps all fell short. We put the Thundermax on and now I'm getting top performance out of my bike. J&P has the technical experience and expertise to provide reliable information and stand by the products they sell with an easy return policy. Thanks
-DAGR
August 30, 2022
Very very good product 👌 the best to the best I'm very recommended this product very ez to programing #1
-JOSE
August 29, 2022
Plain and simple..... Bought this because I wanted something that offered a lot of customizing and I didn't want a "piggy back" unit. Did 50 (hard) miles for it to learn and re-wrote the auto-tune data and I can't believe what a difference it made. The butt dyno can definitely tell a difference and it feels like a different bike being only a stage 1. Yes I will recommend this ECM to anyone I know that's looking to upgrade. Just spend the few extra bucks, folks. I don't regret the purchase one bit.
-MattyJ87
July 21, 2022
Great product. Works as advertised!
-EMORY
June 11, 2022
Great price comes with all wiring harnesses for different computers on Harleys,best part you can take your computer in the house and program and fine tune maps.
-SHAWN
June 11, 2022
Awesome!!
-FRANK

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ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System
ThunderMax ECM With Auto Tune Closed Loop System