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5.0 average, based on 32 reviews

Manufacturer: Blais Racing

Product Information


Please read everything below before ordering!

This service is for 2011-20 KTM SXF/XCF and 2014-2020 FC/FX/FS Husqvarna Closed Course 4-stroke Fuel Injected MX bikes!  Only works for KTM SXF/XCF and Husqvarna FC/FX/FS Models!  We are able to reduce Flameouts by about 50% normally.  This is a Re-Flash service that we perform on your Stock ECU that must be shipped to us here after ordering! I also recommend our 7 Ounce Clutch weight also.

I have really clean settings for all the KTM SXF/XCF and Husqvarna FC/FX/FS models.  When Re-Flashing your ECU we are making changes to fueling, timing, and Accelerator pump fueling.  The biggest issue with all the KTM and Husqvarna models, is them not getting enough fuel down low when you first crack the throttle.  This is the main root of the flameout issues.  When we Reflash your ECU we fix this problem along with cleaning up how the bike runs all the way through the powerband.  The software we use allows us to fine tune the ECU program in all throttle positions and RPM's.  The bike will run noticeably better and we guarantee you will be happy or your money back.

We can now do the KTM EXC/XC-W and Husqvarna FE models below if you already have an unlocked ECU with the EURO Map Installed from your dealer before they were locked out of doing this in 2018. Even with the EURO map your  2017-19 KTM/Husqvarna EXC/FE 250/350450/500/501 model bikes will be in the neighborhood of 16:1 AFR which is in the danger zone at 8000 + RPM.  Our setup is also more performance oriented and will be another 10% jump in power over the standard EURO mapping. If you dont know what the EURO map is then you dont have it in your bike and I cannot make any changes to your ECU.  If you have a stock Map on your FE or EXC/ XC-W I can't do anything with it here.

2012-19 KTM 250/350/450/500 EXC/EXC-F/ XCF-W Models (Must have EURO map already installed from your dealer before they were locked out in 2018)

2014-19 HUSQVARNA FE 250/350/450/501 Models (Must have EURO map installed already from your dealer before they were locked out in 2018)

Please specify in the notes what type of power you are looking for.  More agressive, less agressive.

I can make timing adjustments, Acceleration fuel changes, and general fuel changes to all RPM ranges.  I have very close settings for all these bikes. 

After purchasing online you will receive an email with shipping details from us.  You will include all your information in the box along with exact year and model of your bike.  You will ship your ECU directly to us and we will turn around in 1 day with the Custom Map installed for your exact year and bike model. We recommend you insure and require signature for your package.

This modification is 100% For Closed Course Racing Use only. Not Intended for Street Use!  Does not conform to Carb/ EPA laws and regulations and is not legal for use upon a highway. By ordering this product you agree to these terms.

We recommend shipping by Priority Mail for quickest service normally 2-3 days across the country.  We will return ship your ECU by Priority Mail with Insurance and Signature Confirmation. No Expections!  If you order ECU mapping, then want a Paypal refund you agree to a $25 paperwork processing charge or a full store credit refund.  Please be sure before ordering and email for any questions.


For 2009-2019 CRF250R/RX & CRF450R/RX ECU Mapping Click Here!

Check out ourKTM/ Husqvarna Block Off Kits!

VORTEX RACING ECU FOR 2017-19 KTM 250/350/450/500 EXC, HUSQVARNA FE 250/350/450/501 MODELS

FMF 4.1 Slip on Exhaust for 2017-19 KTM & Husqvarna's in stock!

2016-2019 Bullet Proof Design Radiator Guards

2012-2019 Bullet Proof Designs Linkage Guard

2017-19 KTM 450/ 500 EXC-F & Husqvarna FE450/ 501 3 Piece Thermostat Bypass Samco Sport Silicone Hose Kit

Samco Sport Hose Kit for 2017-19 KTM 250/350 EXC-F/XC-W/SX-F/XC-F & 17-19 HUSQVARNA FC/FE 250/350 Thermostat bypass





Product Code: ECU MAPPING

Customer Reviews

[1]23>7View AllAverage Rating: 5

Just wish I did it sooner!

Chris flashed my 2015 500EXC ECU which I use as a snowbike (w/ Timbersled ARO 120) in the winter and desert bike in the summer (Baja, Moab etc). I have an aftermarket end cap on the stock exhaust and smog hardware removed. No other engine mods. The difference was mind blowing! I wanted to keep the bottom end tractability, wanted a lot more mid range along with power on top for the snow at altitude. The bike is completely transformed! I didn't know the 500EXC had so much in her. Five sta all the way. If you are hesitating...don't! Just do it. I couldn't be happier with the outcome.

Kirk :: Oct 14 2019, 01:59 am


The new mapping works perfect with my set up! Thanks for the help.

Jeff Deastin :: Sep 23 2019, 15:51 pm

‘19 350xcf

I wish I would have done this sooner to my KTM 350xcf. It lugs far better in both Map 1 and 2. There is no need to clutch it in even the rockiest single track sections. It is unbelievable!! It is far more powerful, runs cooler, and it has completely transformed the bike. I would recommend this to anyone who is having problems with their four-stroke KTM. Bryan in Colorado

Bryan Mcfarlin :: Aug 25 2019, 16:49 pm

Absolutely different bike!

Absolutely completely different bike after getting my ECU Re-Flashed. Tons more power , more responsive throttle , say goodbye to those annoying flameouts . Highly Recommended

Anonymous :: Jul 29 2019, 00:14 am

DO IT!!!!

If anyone is on the fence or thinking about this mod, DO IT! Just rode my 18 FX 450 today, first time since getting my ECU back from Blais Racing Services. I’m utterly thrilled with the way bike runs now! Well worth the money! Runs super clean right off idle, revs more freely, pulls harder, runs cooler, starts quicker. I am impressed! Thank you Chris, for doing exactly what you advertise.

Anonymous :: Jul 07 2019, 16:18 pm

[1]23>7View AllWrite a review


California Cancer and Reproductive Harm WarningWarning: cancer and Reproductive Harm -

These warnings are not an indication that these products are violating any safety standards or regulations.

However, as our products might be sold in the state of California, we are legally obliged to inform customers about the potential presence of these chemicals in our products.


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