UPDATE 3: 2020 models (well at least the XTR) can now run 56 MPH via speedo.
UPDATE 2: Weller racing has cracked the ECU! https://www.facebook.com/wellerracingofficial/videos/346706952745365/
Note: This thread is over 7 months old. Yes, the speed limiter has been defeated/bypassed for this long. You're just hearing about this now? Maybe because you've been subscribing to the wrong forum and/or FB group who actively filter out this success story about being able to defeat the limiter whenever it's brought up. Timothy Ward specifically is responsible for this misinformation and I would take anything he has to say with a grain of salt. He is a large reason why there are 'vendor wars' as he perpetuates the hate and trolling some unfortunately like to feed on. He's not very mechanically inclined and has to rely on others to do mechanical chores\maintenance for him.
I don't own stock in SpeedoHealer and none of the supporting vendors carry this product (that I know of), so if you're wondering what's in it for me? It's lonely at the top and I'd like to see more X2/X4 members in the 60 MPH club.
We already know that Yamaha in their infinite wisdom decided not to only rev limit the X2/X4, but to also speed limit it to 51 MPH (this may be 53 MPH for 2019 models). What's worse is that the Yamaha speedo is already 2 MPH slower than actual speed. You can verify this yourself by GPS. Going with larger tires will at best bring you up to an actual 51 MPH (27" tires makes the speedo accurate). UPDATE: According to my dealer, Yamaha re-calibrated the speedo for 2019 so the speedo is supposedly accurate. The speed limiter is still at 51, but at least on 2019 models, you're actually going 51.
We also already know that the current known strategy is a chip flash (a work in progress).
This thread is discuss the above as well as other possible solutions. There is speed sensor (blue connector) located right next to the gear oil dipstick under the passenger side seat
![Image]()
UPDATE:
Well partial solution #1 to this problem and something relatively inexpensive is called Speedo Healer, made by Healtech which can be bought from Blue Monkey Motosports:
Healtech Electronics Speedohealer
You need to order the SH-H05 harness type and then also choose AB control box. Cost comes to around ~$130 shipped
![Image]()
Installation is pretty easy, first remove the passenger side seat bottom and remove the 3 push-pin screws, make note of the yellow outlined area as there is a tab there you'll have to deal with
![Image]()
Lift the rubber flap up that gives you access to the middle gear box oil dipstick and VSS sensor
![Image]()
A couple views of the VSS connector we're going to disconnect and then reconnect to the Healtech harness, simply plug and play and no splicing
![Image]()
![Image]()
Harness installed
![Image]()
Now you want to gently lift the passenger side of the center console cover up so that you can free the internal tab and then pull slightly outwards so you can run the wiring harness to the front of the dash. Make sure you run the harness behind the tab indicated in yellow. I used a piece of heavy foam to keep open the front of the console
![Image]()
I ran a piece of rigid wire to one of the pre-cut accessory spaces
![Image]()
I then pulled a piece of rope through which I attached the other end of the harness to it
![Image]()
I mounted my AB switch to my turn signal column, allowing me to change settings without having to fumble looking for the switch, it's right at my fingertips
![Image]()
![Image]()
You can mount the unit itself wherever you want, but close to stock speedo is preferable
![Image]()
![Image]()
I set memory bank A to calibrate the speedo for actual speed. To program it I set the AB switch to position 'A' and then use the online programming tool, which is also available for Android and IOS, plug in 52 for speedo and then 50 for actual speed, giving me -3.8 setting (I've since changed my 'A' setting to -7.7, which seems more accurate with GPS)
![Image]()
Hit 'generate' and it gives you the button presses to program the desired setting
![Image]()
Rinse and repeat for memory bank B, moving the AB switch to 'B' and then inputting your desired setting but usually you use B for top speed runs so you could do something like 60 and 50 for the values.
Few nitpicks: I would like the LED display to be a plug in or be rotatable so that you have increased mounting options. Having the cables exit the front of the unit on the same side of the LED display seems awkward. They should be mounted behind the unit. I guess the best solution would be to have a 3rd plug that fed a separate display so you could mount it wherever you wanted for a clean install.
Top speed run:
SpeedoHealer alone is good for maybe 53 MPH via GPS (vs 49 MPH) on a stock X4. You'll need a machined sheave and/or larger tires to go further. This thread goes over clutch mods needed to get up to 60 MPH:
https://www.wolverineforums.com/for...m/forum/162-wolverine-x4-general-discussion/21066-wolverine-x4-clutch-mods.html
UPDATE 2: Weller racing has cracked the ECU! https://www.facebook.com/wellerracingofficial/videos/346706952745365/
Note: This thread is over 7 months old. Yes, the speed limiter has been defeated/bypassed for this long. You're just hearing about this now? Maybe because you've been subscribing to the wrong forum and/or FB group who actively filter out this success story about being able to defeat the limiter whenever it's brought up. Timothy Ward specifically is responsible for this misinformation and I would take anything he has to say with a grain of salt. He is a large reason why there are 'vendor wars' as he perpetuates the hate and trolling some unfortunately like to feed on. He's not very mechanically inclined and has to rely on others to do mechanical chores\maintenance for him.
I don't own stock in SpeedoHealer and none of the supporting vendors carry this product (that I know of), so if you're wondering what's in it for me? It's lonely at the top and I'd like to see more X2/X4 members in the 60 MPH club.
We already know that Yamaha in their infinite wisdom decided not to only rev limit the X2/X4, but to also speed limit it to 51 MPH (this may be 53 MPH for 2019 models). What's worse is that the Yamaha speedo is already 2 MPH slower than actual speed. You can verify this yourself by GPS. Going with larger tires will at best bring you up to an actual 51 MPH (27" tires makes the speedo accurate). UPDATE: According to my dealer, Yamaha re-calibrated the speedo for 2019 so the speedo is supposedly accurate. The speed limiter is still at 51, but at least on 2019 models, you're actually going 51.
We also already know that the current known strategy is a chip flash (a work in progress).
This thread is discuss the above as well as other possible solutions. There is speed sensor (blue connector) located right next to the gear oil dipstick under the passenger side seat
UPDATE:
Well partial solution #1 to this problem and something relatively inexpensive is called Speedo Healer, made by Healtech which can be bought from Blue Monkey Motosports:
Healtech Electronics Speedohealer
You need to order the SH-H05 harness type and then also choose AB control box. Cost comes to around ~$130 shipped
Installation is pretty easy, first remove the passenger side seat bottom and remove the 3 push-pin screws, make note of the yellow outlined area as there is a tab there you'll have to deal with
Lift the rubber flap up that gives you access to the middle gear box oil dipstick and VSS sensor
A couple views of the VSS connector we're going to disconnect and then reconnect to the Healtech harness, simply plug and play and no splicing
Harness installed
Now you want to gently lift the passenger side of the center console cover up so that you can free the internal tab and then pull slightly outwards so you can run the wiring harness to the front of the dash. Make sure you run the harness behind the tab indicated in yellow. I used a piece of heavy foam to keep open the front of the console
I ran a piece of rigid wire to one of the pre-cut accessory spaces
I then pulled a piece of rope through which I attached the other end of the harness to it
I mounted my AB switch to my turn signal column, allowing me to change settings without having to fumble looking for the switch, it's right at my fingertips
You can mount the unit itself wherever you want, but close to stock speedo is preferable
I set memory bank A to calibrate the speedo for actual speed. To program it I set the AB switch to position 'A' and then use the online programming tool, which is also available for Android and IOS, plug in 52 for speedo and then 50 for actual speed, giving me -3.8 setting (I've since changed my 'A' setting to -7.7, which seems more accurate with GPS)
Hit 'generate' and it gives you the button presses to program the desired setting
Rinse and repeat for memory bank B, moving the AB switch to 'B' and then inputting your desired setting but usually you use B for top speed runs so you could do something like 60 and 50 for the values.
Few nitpicks: I would like the LED display to be a plug in or be rotatable so that you have increased mounting options. Having the cables exit the front of the unit on the same side of the LED display seems awkward. They should be mounted behind the unit. I guess the best solution would be to have a 3rd plug that fed a separate display so you could mount it wherever you wanted for a clean install.
Top speed run:
SpeedoHealer alone is good for maybe 53 MPH via GPS (vs 49 MPH) on a stock X4. You'll need a machined sheave and/or larger tires to go further. This thread goes over clutch mods needed to get up to 60 MPH:
https://www.wolverineforums.com/for...m/forum/162-wolverine-x4-general-discussion/21066-wolverine-x4-clutch-mods.html
