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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.
46 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®

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    • Sportster 1200 Forty Eight Anniversary XL1200X : 2018
    • Sportster 1200 Forty Eight Special XL1200XS : 2018–2019
    • Sportster 1200 Forty Eight XL1200X : 2014–2020
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    • Sportster 1200 Roadster XL1200CX : 2016–2020
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    • 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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Ratings & Reviews

Help Customers Understand This Product

4.9
46 Reviews
Rating Breakdown
5 stars
41
4 stars
4
3 stars
1
2 stars
0
1 star
0
January 3, 2022
Best thing I ever bought for my 2004 harley electra glide i transformed the bike. Runs like a champ now
-Lumpy1681
December 17, 2021
I did not realize it was 11 to 14 days for processing, I wish I ordered this from fuel moto for $799 instead of $899 fuel moto also will pre program it to your bike specifications before sending it so you can just plug it in and ride.
-Scott askew
August 26, 2021
Things so powerful Now I crashed
-JON
August 26, 2021
Thunder max should be called WOOP ASS. On the way to dyno, eyes in a corner I go thru every weekend,next thing I know feels like I’m in one of those 1984 911 turbos with no traction control that killed at least two drs I knowed And one stockbroker I was in third gear using one of them caned maps for my 131 ci limited Started to accelerate out of corner and bam spun the tire drug the floor board bracket (more then usual Trouper said bike slid 192 ft I know it flipped once and took out a sign that things bad ass
-JON
July 14, 2021
He loves it. Bike is running great and easy setup
-JOLEEN
June 28, 2021
Amazing product! Bike runs so much better.
-STEVE
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

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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