Why is MPG so poor of VFRs

Fill up routine

- straddle the bike
- fill to the neck
- 91 octane (that's premium out here in Cali)

Before PC3, K&N filter and 02 Elim
195 to 205 miles before the gas indicator comes on

After mods
145 to 155 miles...

 

Has anyone tried 6th gear? Hear that helps with milage...:vtr2:

 

Twin Turbo are those mods really worth throwing out a gallon of gas per tank? What was your performance increase?

 

I run in 6th gear all the time as long as I am going over 50 MPH. If I didn't do that it would probably get worse mileage.

 

I ride with my bags on and get 42 if I stay out of the VTEC.

 

What about SLICK 50. FUNNY

 

Your bike is not even broken in yet. Give it a couple of thousand miles, the rings are seated already but parts still have to mate to eachother. On my old old 91 VFR I typically get 37 but it has high mileage and my low fuel light would come on at 165 or so. On my Ninja 500, I consistently get 48 under normal riding conditions. I had a commute a year ago where each bike saw 120 mph almost the entire way to and from work. My mileage on the VFR went down to 27 and the twin saw 36 mph. So its speed that affects gas mileage greatly. If i could ride 80 mph I would see extra MPGs, but I would also fall asleep behind the bars. Keep the shiny side down and enjoy the ride, remember cars lean in the wrong direction in turns.

 

Overall I'm happy, the main reason I got the PC was to rid the annoying surging that disturbed my canyon rides. It helped with the on/off throttle response at low rpms and vtec engagement as well, basically smoothed everything out at the expense of running rich. I run the free Cozye Map(thank you very much) and don't intend to pay the added expense of a custom tune as max power is not my goal. Besides, it's really easy to remove the PC and 02 resistor for long trips.

 

Sounds like your coyze map has got you running rich. I've got similar mods and more, with the benefits of a custom map, and I'm getting between 180 and 200 miles per tank. It would be completely ordinary for a downloaded map to run a rich mixture.

You may want to consider 87 octane aswell. 91 is a waste of money, providing zero benefit unless it's extraordinarly hot, and even then it's not usually required, unless you're getting a ping.

 

I track my milage and fill ups with GasCubby, an iPhone app. My average for the VFR is 37.6MPG. Kiinda funny that my 2007 Honda Civic Automatic averaged 36.8. The VFR I drive like I stole, the civic I drive like an old lady.

 

2007 RWB VFR800, non-abs. I ride about 30 miles each way to work, 80% (there's maybe 5 stoplights in town, then it's all open) highway with significant elevation changes. I usually ride with tank bag, sometimes a 35lb duffle around my shoulder which sits on the seat behind me. I let the bike warm up for about 1 min, then ride very gently until it gets warm. I'm usually relatively easy on the throttle (on my commute...), shifting around 5.5k, but never letting the engine fall below 4k to keep it smooth. Typical cruise speed ranges between 60mph and 80mph, indicated. Last tank was 44mpg, I average between 44-48mpg on my commute. I live at about 5000ft elevation, bike is bone stock and has 2500 miles.

 

I ride an 07 RWB completely stock except for a Double Bubble windscreen. Never saw more than 38 mpg for the first 4000 miles, but the last 15K have seen my around town mpg go to 40 and highway around 51 mpg. No luggage and one up riding 99.9% of the time. Give it time, it will more than likely get better.

 

Bags? WTF?

Ripper - You state that leaving the bags on all the time will kill your gas mileage? You're full of poo-poo. I never take mine off. I have a 2006 with O2 sensor elliminators, K&N air filter, and stock Honda hard cases. I get on average 42-45mpg. I haven't even had the valves adjusted yet and I have 25,000+ miles on it. On a strickly hiway cruise I get 50mpg. The bags do cause some extra drag, but not anything that's going to 'kill' your mileage. If he's getting 42mpg he's spot-on for good combined (twisties/street/hiway) mileage figures.

As a side note, always make sure your tires are properly inflated. I keep mine at 36psi at the front, and 38-40psi at the rear, as recommended by your manual. I never go by what the tire manufacturer states, or I would be running 34psi front and 36psi rear for my Metzler Z6 Roadtecs. Performance in the twisties would more likely be better at those rates, but not for everyday riding.

 

I swapped out the tank on my 06 with a CBR1000 and averaged about 215 a tank. Since getting my new DARK CANDY APPLE RED 07, I've noticed I get about 178 . I use her everyday for my ride to work & the trip is 99% freeway. I cruise between 75 & 85mph so I guess I better start slowing down.

 

I have tracked mine, ridden two up, taken it real easy by keeping it below 6.5k rpms. About everyone that I have talked to gets about the same. But at the same time, I am reading here that 37 – 38 is ok with people.
However, a few years ago (I never store my bike, but did this time. This is when it started for me) my millage went from 42-46 down to 35 and on a good trip 38. I have had the bike in the shop many time and the lead mechanic has even worked with the Nor. Cal. VFR guy in LA. They cannot figure anything out, no fouled plugs, no performance loss, exhaust does not smell rich, and no smell of fuel coming from the engine, nothing.
As a last ditch effort, I am going to try and replace the fuel pressure regulator. Not sure if this will work. Going from 242 miles per tank down to 156 is killing me.
Pliskin states it’s just gas millage, who cares. If my little fix does not work, I am going to keep coming back and read his statement. He does have a point.

 

I get 42 MPG. I have an '08 bone stock and ride w/o the saddlebags most of the time.

 

I've only had mine for a couple weeks, so take this as being from a newb.

One thing I've noticed is my speedometer and odometer aren't calibrated right. I haven't figured out how to fix it, but 50mph on my speedometer equals 42 actual mph according to one run by one of those roadside radar units and 1 actual mile is 1.2 on my odometer as measured by the mile markers. So my mpg math isn't going to be right without doing some compensation, and I'm not sure yet if the speed is off by a consistent percentage until I get a few more runs by the radar.

 

Well thanks David, but that my statement was partly in jest. To me, if I have to fill up more often than usual, I'll gladly pay the $3-$4 (or whatever it is where each one of you live) for the smile I'll have on my face. But that's usually the result of a heavy throttle. Hell, a movie will cost you $12 and that only lasts 2 hours!

The change your seeing appears to be happening for no good reason - hope you get it rectified.

As long as there's rubber on the the tires and the shiny side is up, she's good to go!

 

I average low to mid 40's every time I check the fuel mileage on my 06 that has a PC3 with leo vince exhaust installed. This is 95% highway riding while doing 70-75 mph using top gear. I do live in Oklahoma and the roads are very flat. I also try and use 100% gas. I also don't use the Vtec very often, and shift at or around 5k rpms. My 04 VFR completely stock, would get high 40's all the time. Both bikes had over 8k miles on the engines. I do think power to weight ratio's play a big part in gas mileage.