(18-26) Honda Goldwing GL1800 Stage 1+ EU4/EU5 ECU Flash With Handheld Tuner
(18-26) Honda Goldwing GL1800 Stage 1+ EU4/EU5 ECU Flash With Handheld Tuner
Remove the dullness and restrictions of the Factory Honda Goldwing GL1800 calibration and stop being left behind by your friend's Harley Davidson!
Description
THIS PRODUCT IS 50 STATE LEGAL (C.A.R.B. EO# D-868-15)
3 years in the making and a first of its kind
THE ECU IS NOW UNLOCKED for the GOLDWING GL1800 engine.
The First At-Home ECU Tune for the 2018+ Honda Goldwing
After 3 years of development, BT Moto delivers the first-ever at-home ECU tuning solution for the 2018+ Goldwing GL1800.
No ECU removal. No mail-in downtime.
Just real performance — from your own garage.
Tune at Home. Ride the Same Day.
With our easy-to-use handheld tuner, you can flash your Goldwing in minutes.
✔ Tune from your garage
✔ Stock tune saved automatically
✔ Revert to OEM anytime
✔ No permanent changes
This puts control back where it belongs — with the rider.
Fix the Stock Goldwing’s Biggest Issues
• Top-speed limited
• Wrong throttle where it matters - we improve the response of tour and make sport actually useable with precise throttle adjustments.
• Dull Throttle, lacking HP and performance
Our Stage 1 Calibration
✅ Sharpens throttle response in every ride mode
✅ Removes the restrictive top-speed limiter
✅ Unlocks more usable power across the RPM range
Results: quicker response, stronger passing power, and a more engaging ride — without hurting comfort.
Built for Touring, Not Just Numbers
This tune is designed to:
✔ Improve real-world rideability
✔ Maintain smoothness and comfort
✔ Preserve fuel economy
✔ Protect reliability and emissions
It doesn’t change what makes the Goldwing great — it makes it better.
Buy With Confidence
BT Moto is the brand that pioneered at-home ECU tuning with no guesswork.
Find out why hundreds of Goldwing owners have chosen us for their ECU tuning! We provide safe, proven performance.
Why This Is a Must-Have Upgrade
If you want:
✔ Better throttle response
✔ More confident highway passing
✔ Fewer electronic restrictions
✔ A more enjoyable ride — every mile
This is the upgrade Honda never gave you.
WHAT THE GL1800 STAGE 1 TUNE INCLUDES
- Tune your bike from stock to BT Moto tuned yourself at home with our proprietary handheld tuner (exclusive) See handheld tab for more details on how it works
- Remove the dullness of the Factory Goldwing calibration and stop being left behind by your friend's Harley Davidson
- Add 10+whp with modifications to ignition advance, drive by wire adjustments and fueling tweaks without sacrificing engine life or having to run high octane. See dyno graph page of our test bike.
- 105mph top speed limiter removal (exclusive) 130+mph capable
- Corrected fueling in “IAP" and "TPS" modes for power, throttle response and fuel economy for a better driving experience. Removes most of clunky DCT and Manual transmission feel
- Raised RPM limiter to +400 RPM to keep the bike on "power" better on full throttle and make a massive powerband
- Revised throttle limitations to so 100% throttle gives full 100% torque in every gear and every mode for a lively engine experience. Which works in a case of emergency needing to get out of the way of a vehicle and not being stuck in 30% throttle at full 100% twist
- Smooth throttle modes of Tour/Sport mode to be "parking lot worthy" and remove jumpiness but give more response and torque in driving situations. ECO/RAIN mode are left intact and stock for the purpose of economy and rain riding
- On-off throttle transitions sorted for better around town and traffic with electronic throttle adjustments
- Ignition timing adjustments for increased power and torque for 87-91+ fuels
PLEASE NOTE: FOR TOP SPEED TESTING, PLEASE USE FULL MANUAL MODE ON YOUR GOLDWING.
2025 FULL REVIEW
2023 FULL REVIEW
HOW TO FIND YOUR ECU/TCU NUMBER FOR DCT (You'll need to dig in further for Manual models, video in resources section of our site)
TOP SPEED REMOVAL VIDEO
Don't be fooled by imitations with empty promises, see why everyone uses us:
CLICK HERE TO LEARN WHY YOU SHOULD PARTNER WITH BT MOTO
ANY FURTHER QUESTIONS OR LIKE TO SCHEDULE A CONSULTATION WITH A PERFORMANCE EXPERT?
REACH OUT TO [email protected] OR (877) 483-4031
Dyno Testing
2019 Honda Goldwing GL1800 DCT (AE1) 91 octane tested at our Wast Coast facility on a Dynojet dyno before and after. 15+whp!
2021 Honda Goldwing GL1800 DCT (AE1) 87 octane tested at our East Coast facility on a Mustang dyno before and after +10whp
Below is a before and after BT Moto ECU flash +6-10whp gains and torque gains depending on rpm part of the power curve. Completed back to back same day on 87 octane on a mustang dyno.
Fresh from the ground up development on the 2025 EU5 (6 pin connector) Goldwing
This EU5 new ECU style Goldwing picked up almost 20WHP at redline! Big improvements over the EU4 4pin ECU counterparts. There is a lot of different logic in this ECU and took a lot of time to make work properly and safely while picking up great power. These EU5 bikes are substantially faster than the EU4 bikes in real world road tested conditions.
Goldwing EU4 (18-24) vs Goldwing EU5 (2025). As you can see the 2025 EU5 Bike (red) makes more power everywhere over the EU4 bike (blue). This is an apples to apples comparison. No mods on either, same fuel quality.
THE BT MOTO HANDHELD TUNER
WHAT IS A "FLASH AT HOME" HANDHELD PERFORMANCE TUNER AND WHAT ARE THE BENEFITS OF HAVING ONE?
Custom tuning at your finger tips on your schedule. Read and write your own motorcycles ecu in the comfort of your home. No longer need to bring your bike to a shop, buying a $1000 hardware kit + time + dyno then paying for time of a technician one time deal. You now have a virtual custom personal tuner at your finger tips. This is a for life purchase with full flexibility to transfer to other motorcycles in the future. Thoroughly tested by our own engineers, not just for its function but also durability.
- STORE MULTIPLE MAPS - When you send in your ECU, you only get one map. You might be thinking, "why would I need more than one map?". Storing multiple maps means you're able to flash for different configurations. If you're a serious track competitor, we can work with you to get you different mapping for different tracks. If, for example, you're add modifications to your stock bike, we can email you a file that takes the new exhaust into account with the changes you need to optimize your bike's new modifications with no mailing needed.
- GO BACK TO STOCK ANYTIME - Not only can you store multiple files, you can also flash the original, stock file back into the bike at any time and for any reason for service, sales, and more.
- ABILITY TO TUNE FUTURE BIKES - Customers swap bikes all the time! With our handheld tuner, you are able to put the first bike back to stock, then reset the device and use the same device on your next bike, with a simple and low cost transfer fee.
- ANY ISSUES? We can resolve nearly anything remotely really quick with our engineering staff.
Resources/Downloads
Documents
videos
links
Shipping
BT Moto currently ships directly through UPS. We offer domestic and international shipping.
We ship with UPS as it’s more reliable, has the least amount of shipping issues, and is continuously better than other shipping methods we’ve tried.
Shipping options will automatically display during the checkout process and depends on the size of your order, location etc.
For the majority of our products, the following shipping options through UPS are available.
- Ground (typically 3-7 business days)
- 2-Day Air
- Next Day Air
International Shipping rates are based on a Flat Fee Delivery. They are as follows :
Canada:
$70.00
Qatar, Denmark, Finland, Spain, Switzerland:
$90.00
Belgium, Germany:
$80.00
International Hong Kong, India, Indonesia, Israel, Japan, Korea South, Saudi Arabia, Taiwan, France, Ireland, Netherlands, Portugal, United Kingdom, Dominican Republic, Mexico, Australia, New Zealand :
$80.00
reviews
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Media
Goldwing 6-speed review: www.gl1800riders.com/threads/bt-moto-flash.494340
A customer took their Goldwing on our Stage 1 tune through the notoriously strict German TUV inspection process and passed with flying colors. Document translated from german.
Goldwing BT Moto Tune Review Video