Description

TSP ERM – ECU Reflash Module – for select 2017+ 4 Stroke KTM, Husky, and GasGas Models

Looking for a 2-stroke ERM? Find that on the 2-stroke ERM product page!

The TSP ERM – ECU Reflash Module – is for select 2017+ KTM/Husky/GasGas 350 and 500 4 stroke models. All models require an adapter cable. Be sure to select the cable in the purchase options.

Please note for USA Enduro four stroke bikes: These bikes will need to be de-restricted to suit our tunes, which requires a reed block removal, and a silencer replacement/upgrade. Our tunes are not designed for restricted bikes.

All TSP ERMs come with the TSP ERM Device, Handlebar Mounting Kit, USB Power Cable, and the Rain & Dust Cover included!

Introducing the new TSP ERM v3

Name: TSP ERM - ECU Reflash Module - South Bay Moto Performance
SKU: TSP.ERM.4ST
Price: 500.00 USD
Availability: InStock

The most exciting new product TSP has ever created brings new levels of tunability to the current generation of two and four stroke dirtbikes. Tuning these high tech machines has become out of reach of the average rider or home mechanic, but we are about to put the power back in your hands!

Designed with the future in mind, it was created for current KTM Group TPI, TBI and the Sherco 2 stroke carb models. New ERMs built from 2025 on which have a fourth, female 2-pin connector are also compatible with KTM/Husky/GasGas 4-stroke models.

The ERM comes standard with a downloadable TSP Tune to suit your bike! Your TSP Tune can be downloaded free of charge after the device has been registered on our ERM website.

The TSP ECU Reflash Module, or ERM for short (Patent Pending #2023901865), is a powerful handheld tuning and diagnostic tool packed full of ground-breaking features!

The ERM can be mounted to the handlebars to view live data while doing testing, but it does not need to be mounted to the bike at all times, or even at all! The ECU can be re-flashed and saved with the changes made, and then the ERM can be packed away safely. The ECU tuned with whatever changes saved will stay on the ECU unless you plug the ERM back in and make more changes.

Tuning Features

The ERM can store two TSP tunes plus the Original tune on the ERM (comes with one free TSP tune)
Original tune can be flashed back to the ECU at any time, as often as you want but it cannot be modified.
Original tune is automatically saved to our server during pairing to the ECU
If you have two TSP Tunes saved on the ERM, both can be modified by the user through Basic, Pro or Pro+ modes (Pro and Pro+ Additional extras)
Your ERM can only be paired to one ECU at a time

Basic Tuning

Basic Tuning is standard on all ERMs. It gives every user the ability to make simple but effective changes to maps:

Basic Tuning allows every user to make changes to both map 1 and map 2 of each tuned TSP tune, according to RPM and Throttle
Basic Tuning comes with several preset adjustments (richer, leaner, softer, aggressive) which can be selected by the user.
Basic Tuning also allows every user to make customized adjustments to fuel, ignition, engine braking and throttle response
- Limits to changes apply: Fuel +/- 10% | Ignition +3/-5 Degrees | Engine Braking +5/-5 | Throttle Response +5/-5

Tune fuel, ignition, engine braking and throttle response anywhere, anytime!

Preset Options

Customised Changes

Fuel Table Selected

ECU flashing takes just 90 seconds!

Advanced Tune Settings

Advanced Tune Settings is a standard feature on all ERM which allows modification of advanced parameters that suit riders in specific scenarios.

Fan Activation Threshold

This setting determines the activation temperature of the cooling fan. Stock is 85 – 90°c / 185 – 195°F depending on the model, and the fan will turn off 5°c / 10°F below the on temperature threshold.

Dash Data

View live high speed engine data streamed directly from the ECU

4T Dash Screens

Dash display Parameters: RPM, relative throttle, absolute throttle, map choice, coolant temp, crankcase pressure, ignition advance and battery voltage

Map Indicator

The bar at the bottom of the dash pages displays Grey or Green to indicate which map has been selected.

Green Map

White Map

Diagnostics

Fault Codes

Read and display a list of fault codes on both TBI and TPI models. You can then clear the fault codes with the press of a button.

Service Functions

Perform a range of useful service functions, to diagnose issues and view adaptive values.

Available service functions include:

Fuel Pump: Run the fuel pump for several seconds
Ignition: Activate the spark plug 2-3 times. Do not touch the spark plug during this test.
Injector 1 / Injector 2: Activate the injector 2-3 times
TPS: This opens a window which allows you to view the saved TPS minimum value. It is important to follow the instructions provided closely.

ECU Diagnostics

Take a diagnostics snapshot of the ECU, and send it to TSP for verification and analysis.

Additional Paid Features

These features can be purchased through your account on the ERM Portal.

Pro Mode (Paid feature): Allows higher resolution changes than Basic Tuning according to RPM and throttle across 5 profiles.
- (Limits to changes apply: Fuel +/- 10% | Ignition +3/-5 Degrees)
Pro+ Mode (Paid feature): Same as Pro mode, but with no limitation to changes to fuel & ignition advance
ERM Reset (Paid feature): Allows the ERM to be reset so that it can be paired with a new bike.
- Allows the ERM to be used with a different model, regardless of previous choice
- Will leave the current ECU with whatever tune was last flashed allowing you to keep a TSP tune on the previous ECU
ERM Transfer (Paid feature): Allows the ERM to be reset so that it can be paired with a new bike, but returns the ECU to the original tune
- Allows the ERM to be used with a different model, regardless of previous choice
- Cheaper option than the ERM reset as the bike is returned to the original tune

Tuning with Pro/Pro+ Mode

Comparing Basic and Pro/Pro+

Fuel map tuned with Basic tuning imported to Pro mode

ERM Portal

The ERM portal gives users all the tools they need to keep their ERM up to date, including TSP Tunes, ERM firmware updates, ERM Manager software updates plus instructions and videos.

The website also allows the user to upload copies of their original tune and saved profiles so they can be kept safe and accessed again for future use if needed. Users can also purchase paid activations like Pro and Pro+ mode to enable more ERM tuning features.

ERM Manager Software

Our ERM Manager software is a powerful tool which allows you to communicate with your ERM. You can save a backup of your Original Map, upload TSP Tunes, view profile settings, backup profiles, save diagnostic files and much more. This custom software is currently available for Windows 10 (64 bit) or newer PC’s and MacOS Big Sur (Version 11) or newer.

Minimum System Requirements

Windows: Windows 10 (64-bit) or newer | Wifi network interface | RAM: 2GB or higher | HDD: 100 MB of available disk space

MacOS: MacOS Big Sur (version 11) or newer | Wifi network interface | RAM: 2GB or higher | HDD: 100MB of available disk space

Future Updates

We have a range of exciting updates planned for the future which are going to make the ERM the world standard in two stroke tuning and diagnostic tools. These include accessories, features and knowledge that will be unique to the ERM and allow ERM users to be in control of their engine in a way that’s never been offered before.

Our new ERM truly is tuning redefined

Quick Start Guide

Please follow the guide below to successfully get your ERM paired to your bike! For more detailed instructions the full user guide can be download on the User Guide tab. To begin with, here is some additional information that can help with understanding the ERM device:

Do not leave the ERM plugged in when not using your bike. The ERM will still use a small amount of battery power while asleep and it may drain the battery after 1-2 weeks depending on battery condition. It is best to always disconnect after use.
Avoid contact with water when possible. The ERM is rated IP54. This means that the ERM has moderate water resistance, but it is not waterproof. Water ingress may damage the ERM. Do not pressure wash. Do not submerge the ERM in water.
When setting up your ERM, always save backup of the original tune once the ERM has been paired; this will allow easier recovery of your stock tune in the future in case of ERM damage.
When using the ERM on the bars, treat it like any other valuable electronics device; it can handle a small amount of moisture, vibration, and impact but it is not bulletproof. It is advised to use it as intended for tuning & data logging, but otherwise it is safer to keep it off the bars unless required.
Warranty – For a full breakdown of the TSP warranty, please visit the warranty & legal sections. Water damage, impact damage and normal wear & tear are not covered under warranty.

Please see below the installation videos for the TSP ERM. Ensure you watch the entire playlist below to get all the information required to set up your ERM. These videos will automatically play one after another.

We strongly advise you watch the video series above in full, but a quick summary of the setup process is as follows:

Power your ERM from a computer using the supplied USB cable
Note the device ID and Verification number (Please note these must be 100% accurate or you will not gain access to the website)
Visit www.tsp-erm.com
Create a customer account
Once your account is activated go to ‘My Devices’ and register your new device with the Device and Verification IDs noted down before. You will then be asked to put in your bike’s information – Ensure you do this correctly as you will only have access to Tunes to suit your bike
Under ‘My Devices’, press ‘Device Info’ and then ‘Download Registration File’. Save this file to your PC.
Under ‘My Devices’, press ‘Maps’ and download the relevant TSP Tune to your PC. Ensure you take your time to select the correct tune for your bike setup, as you are only allocated one free tune with your ERM.
Go to the ‘Software Downloads’ and download the latest version of the ERM Manager software.
Run ‘ERM Manager Setup’
Once the ERM Manager is open, press ‘Refresh’. Select your ERM when it appears on the list, and press ‘Connect’ and wait a moment.
After ERM manager has connected to your ERM, press the ‘Registration’ tab, and then press ‘Upload Registration’. Select the registration file that you previously downloaded from tsp-erm.com and press OK. Your registration details should now appear on the Registration screen in the ERM Manager application.
Now go to the ‘Tunes’ tab, press ‘Upload Tune’, select the tune which was downloaded from the website earlier, press OK. The device will download the tune you’ve uploaded to ERM Manager and reboot. If successful, ERM Manager will reconnect automatically when it’s finished.
Your ERM Is now registered with your tune and you are ready to plug it into your bike!
When plugging it into your bike, the device is powered by a black 6-pin plug behind the head light which is standard on all TPI & TBI bikes. Sherco and KTM 4T models require an adapter cable to be fitted to the bike.
Once the device is powered, it will ask you to Pair to your ECU. This will take a copy of your stock ECU tune in this process. Important note: The ERM can only be used against one bike at a time, and it will lock to your ECU unless an unlock code is purchased
Before pairing the ERM requires an active internet connection. This is required to gain access to your ECU for the first time only. This can either be to your home wifi network, or to a mobile phone using wifi tethering.
After the device has finished pairing to your ECU, you are free to use the device! This is a good time to go into the options and flash the downloaded TSP Tune to your ECU.

User Guides

The ERM user guide contains instructions on how to set up the ERM, as well as tips and tricks to make the most out of it. The guide can be downloaded below or viewed in your web browser.

KTM/Husky/GasGas Four-Stroke Models

Name	Version Number	Date Published
User Guide for ERM Firmware v3.0	v1.0	27 April, 2025	View Online

KTM/Husky/GasGas Two-Stroke Models

Name	Version Number	Date Published
User Guide for ERM Firmware v3.0	v1.0	27 April, 2025	View Online

Sherco Carb Models

Name	Version Number	Date Published
User Guide for ERM Firmware v3.0	v1.0	27 April, 2025	View Online

Product Videos

The Video Library contains a variety of video resources for installing and maintaining your TSP ERM. Click a tag below to narrow the videos to what you are looking for.

Play

The new v3 ERM is finally here... and it suits 2 stroke and 4 stoke models!!After more than a year of development the new 4 stroke capable ERM has finally arrived!! The new v3 ERM suits both 2 stroke and 4 stroke models in the one device, giving you total control of your stock ECU.

Each ERM comes with a free performance TSP or FSP tune for your make and model. Unique 4 stroke features include the ability to adjust fuel, ignition, throttle response and engine braking. Plus perform a range of service functions on any bike of the same type. Powerful Data Logging feature coming later in 2025 as well as a heap of other new features. With tunes to suit 2017-2025 KTM Group 350 and 500 EXCF models available now, plus loads more models arriving in coming months get on board NOW by contacting your local ERM distributor or check out erm-performance.com for more info!

Play

ERM Firmware Update v2.2This is one of the biggest firmware updates we have done so far! We have added a range of new Advanced Tune options, new Diagnostic Functions, plus new Transfer options. This update is FREE for all ERM users and suits TPI and TBI bikes.

Play

Getting Started 1 - Unboxing the ERMSee whats inside an ERM box when you open it for the first time...

Play

Getting Started 2 - Create an account and Register the ERMThe new v3 ERM now works with both 2 stroke and 4 stroke models!
This video explains the first steps in setting up your new ERM...
1. create an account on the ERM website
2. register the ERM to your year/make/model
3. download the necessary files
After you've watched this video check out Getting Started 3 - Prepare the ERM

Play

Getting Started 3 - Prepare the ERM before Pairing to an ECUThis video explains how to send the necessary files to the ERM (using ERM Manager software) so that it can be paired to your 2 stroke or 4 stroke bike. If you have problems during this step its usually caused by virus protection software not allowing the installation of ERM Manager on your computer.

Play

Getting Started 4 - Mounting the ERM and fitting the adapter cable (if reqd)This video shows you how to fit the ERM adapter cable (if required), fit the bar mount and then plug in the ERM for the first time.
Once your ERM is connected you do not need to leave it on the bars... you can make changes to the ECU and then remove the ERM and the changes will remain in the ECU.

Play

Getting Started 5 - Pairing to the ECU and Flashing a TuneIf you've followed the steps in our previous Getting Started videos, you'll now be ready to pair the ERM to your ECU and flash the first tune...

Play

Getting Started 6 (4 stroke only) - Correctly set the TPS on your KTM 4 strokeThis video shows you how to correctly set the TPS on the KTM group 4 stroke bikes. The TPS voltage must be set to 0.40v with the butterfly fully closed and then the bike must be allowed to idle at the factory idle setting for an extended period of time. Doing this allows the ECU to calculate the 0% throttle voltage which correctly sets the start point of the fuel and ignition maps.

Play

Activating and using Pro/Pro+ mode on our ERMThis video explains how to activate and use Pro and Pro+ mode on our new ERM. Pro/Pro+ mode allows you to make your own mapping changes to fuel, ignition, oil and powervalve (depending on model).

Play

KTM TBI Powervalve reset using a TSP ERMThis video shows you how to reset the power valve on a KTM TBI 125, 250 or 300 using our TSP ERM device.

Play

ERM Silicone Protective Cover - Two Stroke PerformanceCheck out the new silicone protective cover which is shipped with all new ERMs from May 2024! This cover helps to protect your ERM from dirt, water and light impacts when its mounted on the bars. Also available to purchase individually direct from TSP or through one of our global resellers.

Play

TSP ERM Sherco Cable InstallationThis video shows you how to install the cable thats required to use on of our ERM's on your 18-on Sherco 300. Note that the 18-24 models use a single cable and teh 25+ modesl also require an extra apadter cable as well.

FAQs

FAQ - TSP ERM – ECU Reflash Module

Most frequent questions and answers

Can one ERM programmer be used on multiple bikes?

No, once the ERM is paired to a bike, it is locked to that ECU via the VIN. It can be used as a diagnostic tool on other same generation bikes as the bike it is paired to (TPI vs TBI), but it cannot be used to flash or tune other bikes.

If you want to transfer the ERM to a new bike down the road, you can pay TSP a fee (approx $250 USD), and TSP will reset the ERM and then you can register it to a new bike, but you lose the ability to tune the previous bike.

Is the ERM pre-programmed? Do I need to prepare it in any way before using?

The ERM arrives to our customers blank. There is some computer work required to get the ERM ready to pair with your bike. If you want us to register the device, and download the maps for you, we charge a $30 service fee, and when you receive your ERM, it will be ready to “pair” and “flash” to your bike. Video instructions are provided for customers who want to save the $30, and set the device up themselves.

Does the ERM have to be plugged into the bike at all times while riding in order to have a non-stock tune?

No. Once the ECU is flashed with the TSP tune, we recommend it is removed from the bike. Optionally, the ERM can remain on the bike, but care must be taken as to not damage the ERM while riding.

Is the ERM the only way to modify the tune?

No. Also available is the ECU Reflash. The reflash does not allow the versatility of the ERM, but is an economical option for riders that don’t need as much control over configurations. The ECU Reflash uses the same TSP tunes as the ERM device.

When purchasing an ERM, do I need to send you the ECU?

No. With the purchase of an ERM, you DO NOT need to ship us your ECU. Once you receive the ERM, you will use the ERM to download the correct maps for your bike, and you will flash your own ECU using the ERM. There is also an option to have the ERM shipped pre-programmed for only $30. Select the option under “Need Anything Else?”.

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Below are the make(s) and model(s) that will fit this part.

Year	Make	Engine CC	Model
Year	Make	Engine CC	Model
2017	Husqvarna	350	FE350
2017	Husqvarna	510	FE501
2017	KTM	350	350 EXC-F
2017	KTM	350	350 XCW-F
2017	KTM	500	500 EXC-F
2017	KTM	500	500 XCW-F
2018	Husqvarna	350	FE350
2018	Husqvarna	510	FE501
2018	KTM	350	350 EXC-F
2018	KTM	350	350 XCW-F
2018	KTM	500	500 EXC-F
2018	KTM	500	500 XCW-F
2019	Husqvarna	350	FE350
2019	Husqvarna	510	FE501
2019	KTM	350	350 EXC-F
2019	KTM	350	350 XCW-F
2019	KTM	500	500 EXC-F
2019	KTM	500	500 XCW-F
2020	Husqvarna	350	FE350
2020	Husqvarna	510	FE501
2020	KTM	350	350 EXC-F
2020	KTM	350	350 XCW-F
2020	KTM	500	500 EXC-F
2020	KTM	500	500 XCW-F
2021	GasGas	350	EC350F
2021	GasGas	500	EC500F
2021	Husqvarna	350	FE350
2021	Husqvarna	510	FE501
2021	KTM	350	350 EXC-F
2021	KTM	350	350 XCW-F
2021	KTM	500	500 EXC-F
2021	KTM	500	500 XCW-F
2022	GasGas	350	EC350F
2022	GasGas	500	EC500F
2022	Husqvarna	350	FE350
2022	Husqvarna	510	FE501
2022	KTM	350	350 EXC-F
2022	KTM	350	350 XCW-F
2022	KTM	500	500 EXC-F
2022	KTM	500	500 XCW-F
2023	GasGas	350	EC350F
2023	GasGas	500	EC500F
2023	Husqvarna	350	FE350
2023	Husqvarna	510	FE501
2023	KTM	350	350 EXC-F
2023	KTM	350	350 XCW-F
2023	KTM	500	500 EXC-F
2023	KTM	500	500 XCW-F
2024	GasGas	350	EC350F
2024	GasGas	500	EC500F
2024	Husqvarna	350	FE350
2024	Husqvarna	510	FE501
2024	KTM	350	350 EXC-F
2024	KTM	350	350 XCW-F
2024	KTM	500	500 EXC-F
2024	KTM	500	500 XCW-F
2025	GasGas	250	EC250 TBI
2025	GasGas	300	EX300 TBI
2025	GasGas	350	EC300 TBI
2025	GasGas	350	EC350F
2025	GasGas	500	EC500F
2025	Husqvarna	350	FE350
2025	Husqvarna	510	FE501
2025	KTM	350	350 EXC-F
2025	KTM	350	350 XCW-F
2025	KTM	500	500 EXC-F
2025	KTM	500	500 XCW-F

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TSP ERM – ECU Reflash Module – 2017+ 4 Stroke Models

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Description

TSP ERM – ECU Reflash Module – for select 2017+ 4 Stroke KTM, Husky, and GasGas Models

Introducing the new TSP ERM v3

Tuning Features

Basic Tuning

Advanced Tune Settings

Fan Activation Threshold

Dash Data

Map Indicator

Diagnostics

Fault Codes

Service Functions

ECU Diagnostics

Additional Paid Features

Tuning with Pro/Pro+ Mode

Comparing Basic and Pro/Pro+

ERM Portal

ERM Manager Software

Minimum System Requirements

Future Updates

Our new ERM truly is tuning redefined

Quick Start Guide

Quick Start Guide

User Guides

User Guides

KTM/Husky/GasGas Four-Stroke Models

KTM/Husky/GasGas Two-Stroke Models

Sherco Carb Models

Product Videos

FAQs

FAQ - TSP ERM – ECU Reflash Module

Most frequent questions and answers

Can one ERM programmer be used on multiple bikes?

Is the ERM pre-programmed? Do I need to prepare it in any way before using?

Does the ERM have to be plugged into the bike at all times while riding in order to have a non-stock tune?

Is the ERM the only way to modify the tune?

When purchasing an ERM, do I need to send you the ECU?

Reviews