Honda Valkyrie F6C Forum banner

1 - 17 of 17 Posts

·
Registered
Joined
·
54 Posts
Discussion Starter · #1 ·
It was flashing back and forth between 124 and 125. This was at an altitude of about 350 feet and temperature of 90 degrees. I don't have a windshield either, perhaps it would go a little faster with one.
 

·
Registered
Joined
·
497 Posts
I have hit 205kph which is about 127mph. You run into a speed limiter around there as the stock tires are only rated to 210kph (130mph).
 

·
Registered
Joined
·
216 Posts
Regardless of if you want to go faster or not..... that's all a stock Valkyrie has. You can send your ECU off to be reflashed and the speed limiter removed..... but that
s top speed stock.
 

·
Registered
Joined
·
222 Posts
Regardless of if you want to go faster or not..... that's all a stock Valkyrie has. You can send your ECU off to be reflashed and the speed limiter removed..... but that
s top speed stock.

Yes and No. The engine has more but it does have a speed limiter in the ecu that holds it down to that speed. Don Guhl was supposed to be able to reflash the ecu to remove the limiter but so far has NOT been successful on the 2014 Valkyrie. He has tried mine 3 times with no success. He says he needs to get one in this shop to figure it out.
 

·
Registered
Joined
·
76 Posts
I plan to investigate the speed limiter issue during this winters off season. I have an idea or two but no predictions at this time.
 

·
Registered
Joined
·
76 Posts
On some sections of our favorite sport touring roads here I'm hitting the limiter and could use another 10 or 15 MPH before the turn.
If we're getting 70 MPH at 3,100 RPM I'm thinking that the engine and clutch are strong enough to double that if unlimited.
 

·
Registered
Joined
·
497 Posts
Be careful of your side covers. I hit about 180+ KPH once into very gusty head winds. Blew them both off! Lucky they got caught by my legs so I was able to pin one against the side and grab the other. Didn't see that one coming as a limitation did you :D
 

·
Registered
Joined
·
222 Posts
I plan to investigate the speed limiter issue during this winters off season. I have an idea or two but no predictions at this time.
A trick that would likely work would be to trick in the ecm into thinking its not going that fast. Like using a speedohealer to alter the display speed vs. actual and have the readout in kph but the number would really be mph.


Actually this just got me thinking. On my Yamaha FXSVHO PWC, the instrumentation would only read to 80 mph and the ecm had a speed limiter built in. A retune eliminated the speed limiter and some extra modifications (over 400 hp) put the top speed in the 88 mph range. To be able to display the true speed on the dash, I installed a GPS based unit called Cando Pro, that ties into the speedometer wiring, then switch it to kph and calibrate it so the readout is actually mph. Works perfectly.


https://candoopro.com/yamahagps-c-16_18/?zenid=18b49d6d509c1d0834c6adcc8eaea468


So I think we could do the same thing on the Valk. Just need to locate which two wires to tap into.
 

·
Registered
Joined
·
222 Posts
This is from Healtech.


This kit will work great with your bike, part no.:
SH-V4 + SH-H01

If the bike has a speed limiter and not power restricted,the SpeedoHealer will work great.
You just program a calibration value to make thespeedometer accurate and it will also shift up the speed limiter by the sameamount.

Please see the attached picture from the bike's servicemanual. It will help to locate the speed sensor.
 

Attachments

·
Registered
Joined
·
222 Posts
Can someone confirm if the VSS speed sensor is located in the clear protector shown in the attached fig. 1? Located behind the removable panel in front of your right knee?


If so that's a easy installation.
 

·
Registered
Joined
·
222 Posts
a follow up from Healtech: Still need to "trick" the ecu into thinking the bike is going slower as they say below. We could also calibrate it so in metric, the digital speed would really be mph. The ecm would just think is kph and not near the speed limiter. Either way, this is a way to get around the factory ecu speed limiter.




On most motorcycles the factory speedometer error can beas high as 10% and this also result in higher odometer reading.





When you calibrate the speedometer e.g. by -9%, thismeans the speed limit point is raised by 9% too.


E.g. if the bike has a speed limiter at 250km/h, with the-9% calibration the speed limit point will be increased by about 22 km/h.





So if the bike has about 9% speedo error then calibrationgives +9% top speed.


Normally the bike does not have more power anyway todefeat resistance.


If this is not enough, we recommend to get the SH-V4-ABmodel.


Program a calibration value to memory bank "A"which makes the speedometer accurate and program -50% to memory bank"B" to halve the indicated speed and defeat the top speed limiter.


You can switch between the "A" and"B" memories with a remote switch while riding.


 

·
Registered
Joined
·
222 Posts
And the last message from Healtech: I think I will give the AB unit a try.








Both model have dual bank memory.





The difference between the standard SH-V4 and SH-V4-AB isthat the standard model has a remote push button for top speed recall, whilethe AB model has a remote switch which allows INSTANT switching (even whileriding) between the A and B memory banks.


This can be used to defeat the top speed limiter easily,which is typical on most ATVs and certain bikes.




If you are located in the USA, I would recommend tocontact Blue Monkey Motorsports, they will help you with the ordering:




https://apac01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fshop.bluemonkeymotorsports.com&data=01%7C01%7CJim.Longwith%40oceanagold.com%7C5e2f3ddc3fbb47b09e2408d55cf75d76%7C10d814fd44ef4aaf8c2369325f740605%7C0&sdata=581075kdjYWky38ZPn5OL9zqyDXRzLsrSNQvJ%2BeRlxk%3D&reserved=0


[email protected]


Tel: (877) 234-5150
 

·
Registered
Joined
·
17 Posts
Last year while traveling a long distance of 870 miles wothin a group of Goldwing riders and I was the only 2015 Valkyrie... we tried the maximum speed and I reached 134 miles/hour as a maximum speed and worth to mention that Goldwing couldn’t do that speed due to the more weight the bike is compared to the Valkyrie.
 

·
Registered
Joined
·
87 Posts
And the last message from Healtech: I think I will give the AB unit a try.








Both model have dual bank memory.





The difference between the standard SH-V4 and SH-V4-AB isthat the standard model has a remote push button for top speed recall, whilethe AB model has a remote switch which allows INSTANT switching (even whileriding) between the A and B memory banks.


This can be used to defeat the top speed limiter easily,which is typical on most ATVs and certain bikes.




If you are located in the USA, I would recommend tocontact Blue Monkey Motorsports, they will help you with the ordering:




https://apac01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fshop.bluemonkeymotorsports.com&data=01%7C01%7CJim.Longwith%40oceanagold.com%7C5e2f3ddc3fbb47b09e2408d55cf75d76%7C10d814fd44ef4aaf8c2369325f740605%7C0&sdata=581075kdjYWky38ZPn5OL9zqyDXRzLsrSNQvJ%2BeRlxk%3D&reserved=0


[email protected]


Tel: (877) 234-5150
Did you ever buy and install this? If so, did it work?
 
1 - 17 of 17 Posts
Top