https://endless-sphere.com/sphere/th...1-of-8.102617/

I found this link
I have a boom bd250-5 superbike that I got from Venom Motorsport
Currently have 6,000 miles
For the longest I hated how the mph was off by 15 to 20 also hated how every other bike was easy to get to settings but not this one haha and here they tell you the code to enter for P0000 to get into settings and other codes
When I found it, i had to try it instantly, tried the code and it works just need to test my bike but had to make an account to let others know
It works
6610 code and I put c as either 1699 or 1700 everything else I leave
Could change 2-004 to 2 and it will make the rpm idle lower

https://endless-sphere.com/sphere/th...1-of-8.102617/

I found this link
I have a boom bd250-5 superbike that I got from Venom Motorsport
Currently have 6,000 miles
For the longest I hated how the mph was off by 15 to 20 also hated how every other bike was easy to get to settings but not this one haha and here they tell you the code to enter for P0000 to get into settings and other codes
When I found it, i had to try it instantly, tried the code and it works just need to test my bike but had to make an account to let others know

So I bought the Aliexpress speedometer calibrator in the post above, and it works perfectly on my 21 Vader (it's from Venom Motorsports). This model year has the non-adjustable speedo, but the Aliexpress unit was simple to install and set. I thought my speedo was off by about 20%, so I slowed it by 20% on the calibrator and it was perfect with no further adjustments. For 25 bucks, it's nice to have that fixed.

Thank you for coming back and informing us it is indeed the solution we have been looking for.

Actually, thank you for finding and posting it. The speedo error has been bothering me since I got the bike, and I really didn't want to have to rewire another speedo. Now I'm thinking of lowering it more until the actual mileage is correct...

Is this speedo calibrator necessary to correct the 22 Templar speedo? Mine reads 3mph fast at 45mph.

This will fix any bikes speedometer and any cars speedometer for that matter. Any sensor sending electronic signals to the dash display down a signal wire can be corrected up or down.

Thanks. I was hoping that I could simply change the wheel diameter in the speedo like I do on my ebike.

That’s one way to do it and the same speedometer on the Templar that is not the OEM one they’ve custom ordered for the bike will do that. You are simply changing the parameter used in the speed calculation in the dash. When you don’t have access to change that then this is a universal way to fix it. The parameter remains fixed but with this device you are changing the input signal value up or down to force a correction through input signal rather than tire diameter.

So then my options are: new speedo for $28, in-line calibrator for $25 or live with 7% speedo error. I'll live with it for now but it's good to know how to fix it later. Thx.