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Uh oh - Our system doesn't think this part will fit your 2004 Harley Davidson Sportster Custom XL883C (change vehicle selection)

ThunderMax ECM Performance Auto Tuner For Harley Touring 2017-2020

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ThunderMax ECM Performance Auto Tuner For Harley Touring 2017-2020

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ThunderMax ECM Performance Auto Tuner For Harley Touring 2017-2020 Instructions

Instructions (pdf)

ThunderMax ECM Replacement w/ Auto Tune For Harley

The ThunderMax ECM With AutoTune is the high-tech way to manage every aspect of your fuel curve for the best possible throttle response and performance! Unlike piggyback tuners that simply modify your ECM (electronic control module) the Thundermax completely replaces it! Consider it a brain transplant for your bike! The true closed-loop system continuously self-adjusts to properly tune the motorcycle's air/fuel ratio for all riding conditions. If you start at sea-level and ride up to a mountain pass, the ThunderMax will automatically adjust your tune to keep your engine running cool and happy!

The ThunderMax system utilizes wide-band O2 sensors, along with your bikes factory sensors to monitor and adjust your air-fuel ratio in real time! That means more control and a smoother running engine. With the built in barometric sensor you never have to think about ambient air changes. WideBand O2 sensors constantly read the Air Fuel Ratio and give live, real time feedback to the ECM. That means, no “accepting” the changes made to the map, once you key off the changes are written. The ThunderMax ECM is fully adjustable with their free tuning software or can be used just by loading a base map.

Features:

Mounts in place of factory ECM
Real time auto-tune adjustments
Start with a base map then let auto tune dial in your ride
Compatible with high-performance camshafts, turbo, nitro and superchargers
Monitor, record and analyze diagnostic codes and stats
Free firmware, tech support and updates

Note: System requires 18mm O2 sensor ports to accommodate the wideband sensors, stock pipes will need to have the 12mm bungs removed and 18mm bungs welded in place.

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Uh oh - Our system doesn't think this part will fit your 2004 Harley Davidson Sportster Custom XL883C (change vehicle selection)

Fitment Notes & Exceptions

Will require the use of an exhaust system with 18mm sensor bungs or head pipes must be modified to accept 18mm sensors.
Works with or without RDRS. (Traction Control)
Will not work on trikes with traction control.

Harley Davidson: Electra Glide Standard FLHT 2019, 2020; Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019; Electra Glide Ultra Limited CVO/SE FLHTKSE 2017, 2018, 2019, 2020; Electra Glide Ultra Limited FLHTK 2017, 2018, 2019, 2020; Electra Glide Ultra Limited Low FLHTKL 2017, 2018, 2019; Freewheeler FLRT 2017, 2018, 2019, 2020; Road Glide CVO/SE FLTRXSE 2018, 2019, 2020; Road Glide FLTRX 2017, 2018, 2019, 2020; Road Glide Limited FLTRK 2020; Road Glide Special FLTRXS 2017, 2018, 2019, 2020; Road Glide Ultra FLTRU 2017, 2018, 2019; Road King FLHR/I 2017, 2018, 2019, 2020; Road King Special FLHRXS 2017, 2018, 2019, 2020; Street Glide CVO/SE FLHXSE 2017, 2018, 2019, 2020; Street Glide FLHX/I 2017, 2018, 2019, 2020; Street Glide Special FLHXS 2017, 2018, 2019, 2020; Tri Glide Ultra Classic FLHTCUTG 2017, 2018

This item is also available for 185 other models:

Harley Davidson: Dyna Fat Bob FXDF 2008-2011; Dyna Fat Bob FXDF 2012-2017; Dyna Low Rider FXDL/I 2004-2009; Dyna Low Rider FXDL/I 2014-2017; Dyna Low Rider S FXDLS 2016-2017; Dyna Street Bob FXDB/I 2006-2011; Dyna Street Bob FXDB/I 2012-2017; Dyna Super Glide Custom FXDC/I 2005-2011; Dyna Super Glide Custom FXDC/I 2012-2014; Dyna Super Glide FXD/I 2004-2010; Dyna Super Glide Sport FXDX 2004-2005; Dyna Switchback FLD 2012-2016; Dyna Wide Glide FXDWG/I 2004-2011; Dyna Wide Glide FXDWG/I 2012-2017; Electra Glide Classic FLHTC/I 2002-2007; Electra Glide Classic FLHTC/I 1999-2001; Electra Glide Classic FLHTC/I 2008-2013; Electra Glide Highway King FLHFB 2023; Electra Glide Standard FLHT 2021-2022; Electra Glide Standard FLHT/I 2002-2007; Electra Glide Standard FLHT/I 1999-2001; Electra Glide Standard FLHT/I 2008-2009; Electra Glide Ultra Classic FLHTCU/I 2002-2007; Electra Glide Ultra Classic FLHTCU/I 1999-2001; Electra Glide Ultra Classic FLHTCU/I 2014-2016; Electra Glide Ultra Classic FLHTCU/I 2008-2013; Electra Glide Ultra Classic Low FLHTCUL 2015-2016; Electra Glide Ultra Limited CVO/SE FLHTKSE 2014-2016; Electra Glide Ultra Limited CVO/SE FLHTKSE 2021; Electra Glide Ultra Limited FLHTK 2014-2016; Electra Glide Ultra Limited FLHTK 2021-2023; Electra Glide Ultra Limited FLHTK 2010-2013; Electra Glide Ultra Limited Low FLHTKL 2015-2016; Freewheeler FLRT 2015-2016; Night Rod Special VRSCDX 2007-2017; Night Rod VRSCD 2006-2008; Revival FLH 2021; Road Glide Custom FLTRX 2010-2013; Road Glide CVO/SE FLTRSE3 2009; Road Glide CVO/SE FLTRSEI2 2001; Road Glide CVO/SE FLTRXSE 2021-2022; Road Glide CVO/SE FLTRXSE 2012-2013; Road Glide FLTR/I 2002-2007; Road Glide FLTR/I 1999-2001; Road Glide FLTR/I 2008-2009; Road Glide FLTRX 2015-2016; Road Glide FLTRX 2021-2023; Road Glide Limited CVO FLTRKSE 2022-2023; Road Glide Limited FLTRK 2021-2023; Road Glide SE FLTRSEI 2000; Road Glide Special FLTRXS 2015-2016; Road Glide Special FLTRXS 2021-2023; Road Glide ST FLTRXST 2022-2023; Road Glide Ultra CVO/SE FLTRUSE 2015-2016; Road Glide Ultra CVO/SE FLTRUSE 2011; Road Glide Ultra FLTRU 2016; Road Glide Ultra FLTRU 2011-2013; Road King Classic FLHRC/I 2002-2007; Road King Classic FLHRC/I 1999-2001; Road King Classic FLHRC/I 2008-2013; Road King Custom FLHRS/I 2004-2007; Road King CVO/SE FLHRSE5 2013; Road King CVO/SE FLHRSE6 2014; Road King FLHR/I 2002-2007; Road King FLHR/I 2000-2001; Road King FLHR/I 2014-2016; Road King FLHR/I 2021-2022; Road King FLHR/I 2008-2013; Road King Special FLHRXS 2021-2023; Softail Blackline FXS 2012-2013; Softail Blackline FXS 2011; Softail Breakout 114 FXBRS 2018-2020; Softail Breakout 117 FXBR 2023-2024; Softail Breakout CVO/SE FXSBSE 2014; Softail Breakout FXBR 2018-2019; Softail Breakout FXSB 2013-2014; Softail Cross Bones Springer FLSTSB 2008-2010; Softail Cross Bones Springer FLSTSB 2011; Softail Custom FXSTC/I 2007-2010; Softail Deluxe CVO/SE FLSTNSE 2014-2015; Softail Deluxe FLDE 2018-2020; Softail Deluxe FLSTN/I 2005-2010; Softail Deluxe FLSTN/I 2016-2017; Softail Deluxe FLSTN/I 2012-2015; Softail Deluxe FLSTN/I 2011; Softail Deuce FXSTD/I 2001-2007; Softail Fat Bob 114 FXFBS 2021-2023; Softail Fat Bob 114 FXFBS 2018-2020; Softail Fat Bob FXFB 2018-2019; Softail Fat Boy 114 FLFBS 2021-2024; Softail Fat Boy 114 FLFBS 2018-2020; Softail Fat Boy FLFB 2018-2019; Softail Fat Boy FLSTF/I 2001-2010; Softail Fat Boy FLSTF/I 2016-2017; Softail Fat Boy FLSTF/I 2012-2015; Softail Fat Boy FLSTF/I 2011; Softail Fat Boy Lo FLSTFB 2010; Softail Fat Boy Lo FLSTFB 2012-2015; Softail Fat Boy Lo FLSTFB 2011; Softail FXDR 114 FXDRS 2019-2020; Softail Heritage Classic 114 FLHCS 2021-2024; Softail Heritage Classic 114 FLHCS 2018-2020; Softail Heritage Classic FLHC 2021; Softail Heritage Classic FLHC 2018-2020; Softail Heritage Classic FLSTC/I 2001-2010; Softail Heritage Classic FLSTC/I 2016-2017; Softail Heritage Classic FLSTC/I 2012-2015; Softail Heritage Classic FLSTC/I 2011; Softail Heritage FLST/I 2006; Softail Heritage Springer FLSTS/I 2001-2003; Softail Hydra-Glide Revival 114 FLI 2024; Softail Low Rider FXLR 2018-2020; Softail Low Rider S FXLRS 2021-2024; Softail Low Rider ST FXLRST 2022-2024; Softail Night Train FXSTB/I 2001-2009; Softail Rocker C FXCWC 2008-2010; Softail Rocker C FXCWC 2011; Softail Rocker FXCW 2008-2010; Softail Slim FLS 2016-2017; Softail Slim FLS 2012-2015; Softail Slim FLSL 2021; Softail Slim FLSL 2018-2020; Softail Sport Glide FLSB 2021; Softail Sport Glide FLSB 2018-2020; Softail Springer Classic FLSTSC/I 2005-2007; Softail Springer FXSTS/I 2001-2006; Softail Standard FXST 2021-2024; Softail Standard FXST 2020; Softail Standard FXST/I 2001-2010; Softail Standard FXST/I 2012; Softail Standard FXST/I 2011; Softail Street Bob 114 FXBBS 2021-2024; Softail Street Bob FXBB 2018-2020; Sportster Custom XL1200C 2007-2009; Sportster Custom XL1200C 2010-2013; Sportster Custom XL1200C 2014-2019; Sportster Custom XL883C 2007-2009; Sportster Forty-Eight Special XL1200XS 2018-2019; Sportster Forty-Eight XL1200X 2010-2013; Sportster Forty-Eight XL1200X 2014-2020; Sportster Iron XL1200NS 2018-2020; Sportster Iron XL883N 2009; Sportster Iron XL883N 2010-2013; Sportster Iron XL883N 2014-2020; Sportster Low/SuperLow XL883L 2007-2009; Sportster Low/SuperLow XL883L 2010-2013; Sportster Low/SuperLow XL883L 2014-2019; Sportster Low XL1200L 2007-2009; Sportster Low XL1200L 2010-2011; Sportster Nightster XL1200N 2007-2009; Sportster Nightster XL1200N 2010-2012; Sportster Roadster XL1200CX 2016-2020; Sportster Roadster XL1200R 2007-2008; Sportster Roadster XL883R 2007-2009; Sportster Roadster XL883R 2010-2012; Sportster Seventy-Two XL1200V 2012-2013; Sportster Seventy-Two XL1200V 2014-2016; Sportster SuperLow XL1200T 2014-2017; Sportster XL883 2007-2009; Street Glide CVO/SE FLHXSE 2015-2016; Street Glide CVO/SE FLHXSE 2021-2022; Street Glide CVO/SE FLHXSE 2010; Street Glide CVO/SE FLHXSE2 2011; Street Glide CVO/SE FLHXSE3 2012; Street Glide FLHX/I 2006-2007; Street Glide FLHX/I 2014-2016; Street Glide FLHX/I 2021-2023; Street Glide FLHX/I 2008-2013; Street Glide Special FLHXS 2014-2016; Street Glide Special FLHXS 2021-2023; Street Glide ST FLHXST 2022-2023; Street Glide Trike FLHXXX 2010-2011; Street Rod VRSCR 2006-2007; Tri Glide Ultra Classic FLHTCUTG 2014-2016; Tri Glide Ultra Classic FLHTCUTG 2010-2013; Ultra Classic Electra Glide CVO/SE FLHTCUSE4 2009; Ultra Classic Electra Glide CVO/SE FLHTCUSE5 2010; Ultra Classic Electra Glide CVO/SE FLHTCUSE6 2011; Ultra Classic Electra Glide CVO/SE FLHTCUSE7 2012; Ultra Classic Electra Glide CVO/SE FLHTCUSE8 2013; V-Rod Muscle VRSCF 2009-2017; V-Rod VRSCA 2002-2006; V-Rod VRSCAW 2007-2010; V-Rod VRSCB 2004-2005; XR1200/XR1200X 2008-2012

Product Style	Item #	Store SKU	Manufacturer Product #	Availability
Product Style ThunderMax ECM Performance Auto Tuner For Harley Touring 2017-2020	Item # 10223950	Store SKU 330283	Manufacturer Product # 309-588	Availability In Stock: Ships within 24 hours

$39.99/yr.

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