ThunderMax
ThunderMax ECM with Integral Auto Tune System
Item: #751346 | Part Number: Not Selected$312.99 - $1,907.99
Description
Features: ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory Harley Davidson 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:...
ThunderMax ECM with Integral Auto Tune System Item # 751346
Description
Features:
- ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory Harley Davidson 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
- Made in the U.S.A.
Part Numbers for ThunderMax ECM with Integral Auto Tune System
Fitment for Parts ThunderMax ECM with Integral Auto Tune System
This part fits the following vehicles:
Reviews
Rated 5 out of
5
by
squirrel from
great product
easy to install and set-up was just as easy after downloading progam
Date published: 2021-02-15
Rated 5 out of
5
by
Scott from
Good upgrade
Installed on my 2010 street glide. Instructions were easy to follow.
Date published: 2023-05-02
Rated 5 out of
5
by
Davis from
Amazing tuner
I bought this tuner to complete my stage 1 on my 16 street bob, it was plug and play and easy to program. My bike starts easier and runs a lot smoother with no more decel pops from my 2-1 exhaust. Definitely an improvement in the power range and I look forward to building my motor out further with this tuner.
Date published: 2022-11-30
Rated 5 out of
5
by
Adana from
Wow! That’s all I can say!
06 FatBoy with VH BS Stag pipes and an air cleaner.
Idles rock solid at 880 rpm. Great drivability . Smooth acceleration and nice deceleration without pop. No shift pops .Easy install. I don’t know why Indifnt do this a long time ago??
Date published: 2022-08-26
Rated 5 out of
5
by
Biker Bob from
Worth the money
This is the third one I have installed and working great like the first two.
Date published: 2022-08-20
Rated 5 out of
5
by
Gab45 from
Tres bon produit!
J’ai installé le thundermax pour avoir la meilleur tune possible pour les différentes modifications de mon flht. La différence est énorme sa regler beaucoup de problème relié au mauvaise tune avec mon ancien au programmeur. Maintenant je sais que j’ai toujours la tune parfaite pour mon bike je recommande thundermax a tout eux qui modifie leur bike et qui veulent avoir une tuned parfaite sans aller sur le dyno
Date published: 2022-08-17
Rated 1 out of
5
by
Joel from
GARBAGE
I had nothing but issues with this tuner. After weeks of back and forth with thundermax trying to get the bike to idle I gave up. They stopped responding to my emails and blamed the issue on a TPS fault. I load tested and checked the resistance of the entire TPS assembly and its fine. Put the factory ECM back in the bike and it lit instantly and ran great.
Ordered a Powervision instead.
Fortnine was great to deal with as always though
Date published: 2022-11-28
Rated 5 out of
5
by
Weskoast from
Just buy it. Nothing compares
Best tuner on the market, just dont instal the pig tail instal the actual usb and route it accessible.
Date published: 2025-11-03
Questions
Is it plug and play or does it have to be married with the tsm at a Harley dealership?
Plug and play. Doesn’t marry itself.
Date published: 2024-08-31
My 2006 softail deluxe doesn't have 02 sensors, will this tuner still work?
Since your vehicle does not have O2 sensors, this tuner may not be compatible with your bike as it relies on the data from these sensors to perform its auto-tuning function.
Date published: 2025-05-22