I bought my Vaquero in April 2011. In the first few hundred miles I came to believe there was a mismatch between the amount of throttle I was applying and the engine's response, or I should say the lack of. At that time I had over 35 1/2 years working on skoots for a living and this was the first in that time period that I was experiencing this "lag". At first I attributed it to a tight engine during the breakin period, but even after that first 1000 miles and really gettin onto the throttle my observation remained...too much throttle and not enough get-up-n-go!
During my first dyno session on my skoot it was on the agenda to address this problem. Inspection of throttle plate opening vs throttle grip rotation revealed not only a very slow rate of opening, but also the amount of opening did not match grip rotation.
These skoots being ride by wire I knew that Kawi had programmed a reduction in throttle plate opening. Not good and certainly not acceptable to me.
What followed was a modification I made to the throttle which alters the signal the ECU recieves thus altering the signal it sends to the throttle plate servo motor.
WALA...an instant improvement in throttle response with less grip rotation, this was noticed with the skoot stationary in neutral.
The real tests were to come. Before the mod was done I performed part throttle dyno runs to document the power and torque at a specific part throttle position. Follow up runs were done with the grip in the EXACT position
and this is where we see the advantage of increased throttle plate opening.
Here is the dyno graph showing stock vs my throttle mod...
The difference is simply due to the larger amount and quicker opening of the throttle plates. The real test was gettin on the skoot for a test ride. That is where this mod had me finally very glad I bought this Vulcan!
Now for the "if you want to know more" part!!
I have been performing this mod for 1700 owners since about September 2011and it has been recieved very well. The mod is applicable to all years and models of the 1700. The mod can be performed on your grip as long as you are going to be using that grip, as my mod is permanent. Modifying you grip that has an OEM equivalent inner throttle tube is $59.00 with same day service. If you send me a Avon throttle grip there is an extra $10.00 charge to clean up the throttle tube for proper installation of my mod.
I also keep in stock both KURYAKYN ISO GRIPS and AVON AIR CUSHION GRIPS already modified and ready to be shipped. Both grips are available in CHROME or BLACK.
Cost for modified KURYAKYN or AVON grips is $135.00
I can also special order heated Avon grips and other brands of grips of your choice and perform the mod before I ship them. Contact me for your specific needs and I will provide a quote at that time.
I ship via USPS and shipping/insurance charges are extra. I also ship out of the country wherever UPS delivers to, purchaser is responsible for all duty and whatever other charges that are incurred.
I also offer drive in/drive out while you wait service for anyone that comes to my shop. There is a small labor charge for this service, call to make an appointment.
Full instructions are included.
If you have any questions do not hesitate to respond here, send me a pm, an email or call me at the shop. You can also search in the 1700 forum under RACNRAY's throttle mod and similar headings to read what users of my mod has to say.
CYCLE RACE TEK,INC
400 ANSIN BLVD
HALLANDALE BEACH FL