Slow speed abruptness

I consider myself a full fledged novice rider with only 1,400 miles under my belt on my '06. I am not as smooth with my throttle as I would like while in 1st or 2nd at parking lot speeds. The throttle response at this low speed is very sensitive and I find myself bucking a bit at times with my throttle input.

While this may simply be operator inexperience, is there anything I might check from a mechanical standpoint that may eliminate some of this? My bike has just over 2K miles on it. Would a change in airfilters, a chain adjustment, or anything else improve slow speed throttle smoothness?

Thanx,

Gunzer:rambo:

 

Same issue with mine. I use the friction zone to smooth it out. There's a throttle sleeve with a non-standard cam profile available (G2 maybe?) that's supposed to minimize this, but it's not listed for a VFR, although I read somewhere that it will work on one. I may look into this further.

 

Power Commander

I did not want to go down the rode but I did after a lot of reading I pulled the trigger and I must say the Power Commander is almost the complete cure for what you describe. VFR Chick pushed me to it. Was shocked at the change and the most noticable is the parking lot stuff.:thumbsup:

 

thank the epa for your problems

 

So this could be a fuel management deal?

Thank you for the replies:thumbsup:

 

That issue alone has taught me to be smoother on the throttle.

 

I found my chain too tight. I have may chain on the loose side now, and it runs much better for me.

 

its the o2 sensors... do a search on o2 sensor eliminators and read up on them. all you have to do is replace them with 330 ohm resistors. she will run buttery smooth afterwards.

 

Welcome to electronic fuel injection bikes.

To my knowledge, the o2 eliminators really only posed problems going from steady state throttle to acceleration/deceleration changes due to thining out the mixture during steady state periods.


If it were the o2's causing the problem going from no throttle to just a little throttle like in parking lot situations, then I wouldn't have the same problem on my 98.

Although CHAIN SLACK and TIRE PRESSURE will make HUGE differences in how your bike feels/handles. Check them both out.


You'll learn to have a steady hand with time.

 

I was concerned about slow speed, parking lot situations too. So.... that's where I practiced the most and learned to just use the friction point to smooth things out, you'll get it.

 

Have you tried removing all the slack in the throttle cables?
When I got my 06 home that was one of the first things I did.

 

Guys Guys Guys!!!!

Two words:
PAIR VALVE

To save you some time I will Plaigerize from other posts and I will edit and not give credit....as some is plaigerized form my own....

Anyway when the engine is below about 160 degrees F, the PAIR valve is always open--closed throttle, open throttle, revving, etc. This introduces fresh air in the exhaust ports, oxidizing CO and HC, and producing extra heat to light-off the catalytic converter.

When the engine is above about 160 degrees F, the PAIR valve CLOSES as soon as the throttle is slightly opened. It OPENS again when the throttle is shut, regardless of RPM. This is probably done to provide a little richening at idle to smooth out the recommended 1200 RPM idle speed. but it makes any change in throttle that much more abrubt and less smooth and in my oppinion "uncool."

The VFRwiki has a very easy "How-to"
Pair Valve Blockoff Mod - VFRwiki

I personally went to my local hardware store and got an assorted sized set of rubber stoppers... Spent a whopping $1.37 on 6 different sized stoppers and went home chose the best size that would work and even made it so the hose fitted over the blocked port with the stopper... Discarded the rest of the stoppers and noticed drastic improvement in lowspeed throttle response...

 

I think you just need some more riding experience to get used to riding in general and the VFR specifically before you start tinkering with the bike. More seat time would be my recommendation- that will make a bigger difference than any mod you could do

 

It is certainly a good idea to be sure that the mechanical side of things is correct. Modifications and eliminating some of the emissions equipment might be good options for some. But, I tend to focus on my throttle technique. Initially, one can easily interpret the jerkiness as a problem on the part of the bike but since I can be very smooth at times it encourages me to work hard at making my inputs more controlled and refined. After all, what is more important than throttle application? Nothing is more dangerous (I speak from experience) than improper throttle application. Why not see this situation as an opportunity to work at this important skill? I enjoy the experience of accurately controlling such a fine machine and find that every ride is a learning experience. Some days you won't feel very sensitive and "on" and other days you'll feel a heightened connection and sensitivity that allows you to move ahead on that learning curve. Don't expect to be an expert right away. Good luck and be safe! :thumbsup:

 

To go all the way back to the first branch on the troubleshooting tree, have you ever taken the MSF basic course? They do a really nice job teaching the basics of clutch work. Even with linked brakes, the techniques they teach work on the VFR. They teach to use the rear brake along with the clutch in the friction zone when you're doing low-speed turns, or even just crawling along. Otherwise, its just a matter of practice.

 

the fact is with a stock 2002 plus vfr800, it is impossible to hold the RPMs at 3000. it is just a trait of all the emmissions equiptment arguing with each other.

 

I have 40K on my 06 and I still have the same "on off throttle" at low speeds. Seat time will help a little but won't get rid of it.. This F' ed up throttle is the reason i'm looking for a new bike!

 

thats a bit extreme dont u think? 330 ohm resistors 5 pack for 99 cents... new bike? 10 grand plus... lol

 

The on/off throttle is kind of the norm with EFI bikes...

 

i have a feeling that with your 98 pre-o2 sensor bike your idea about weird on-off throttle is completely different than what us o2'd bikes are feeling.