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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.
40 Reviews

ThunderMax ECM With Auto Tune Closed Loop System

$899.99

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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

$899.99
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.

Ratings & Reviews

Help Customers Understand This Product

4.8
40 Reviews
Rating Breakdown
5 stars
35
4 stars
4
3 stars
1
2 stars
0
1 star
0
May 10, 2021
Awesome product! I was a little apprehensive picking the right map to load as I have many modifications on my engine. Once loaded it’s been running great and I’m still putting some miles on it to see how the tune goes.
-LES
March 18, 2021
well not so good on this item I got to send it back to manufacture cause it won't take a basemap and start the bike and pretty pricey to have that issue out of box new
-TIM
February 2, 2021
Love ThunderMax autotuners!! I've used them in the past with great results. Yes the up front expense is a bit steep, but it gives you the freedom to change what ever you want on your bike without the hassle of bringing into a shop to get dynotuned every time you change your muffler or head pipe or cams or whatever. I will always run these on my EFI bikes.
-JOHN
January 26, 2021
Excellent service. Willing to price match. Saved money buying from JP cycles
-ERIC
December 1, 2020
The Thundermax ECM with autotune is the perfect fit for my 2019 HD SGS build. The ECM is easy to install, the software is intuitive. My build included a RS468 cam, S&S oil pump, cam plate, tappet cuffs and quickie pushrods and Fueling tappets. I also installed a TAB performance header and B.A.M. Sticks with 2.5 inch baffles. My M8 114 cu. in engine really wakes up between 2,000 and 5,000 rpms.
-BILL
September 3, 2020
I can't tell you how much JP cycles worked with me on getting the ThunderMax ECI unit installed they helped me and walk me through the programming of the unit their technical support staff goes above and beyond they even called me back to make sure everything was okay. There's only two guys in their tech support team and I worked with one gentleman his name alludes me but I have to say that they are phenomenal with their follow up and their knowledge base. if I was to ever buy a product aftermarket product I would go with JP cycles they know their s***.
-STEVEN
June 1, 2020
Works like a ECM on my 2012 Road Glide should. I like the way you can hook my laptop to it and go in and program it and see the readings for fuel management and all the other things you want to look at. Works well with the S&S 2 into 1 exhaust with the 18 mm oxygen sensors. Wish I would have put this in my bike a long time ago.
-BRADFORD
May 16, 2020
I love my new thundermax auto tuner we're having problems dynoing my bike before but the thundermax auto-tune on downloaded their Maps started to bike at tood itself and runs so much better A lot better throttle response a lot more horsepower a lot better idle and motor runs a lot cooler
-NATHAN
December 20, 2019
Quality and install is great still trying to find a tune that matches my set up
-BILLY
October 14, 2019
I was having misfiring issues and loss of power at low RPM with my bike for years. I took it to Harley and they said it was fine, then I took it to another shop who knew it wasn't right but couldn't find the problem. I read that there are issues with some stock ECM's. The ThunderMax was the best investment to replace my stock ECM and customize my tune. It runs like a new bike!
-CAMERON

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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

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