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Old 03-23-2007, 02:14 PM   #21
witchdoctor575
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Keep it under 5k. When I keep my rc under 5 k I get 40pg When I hammer on it I get to the upper 20's.
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Old 03-23-2007, 02:17 PM   #22
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Quote:
Originally Posted by bigcomfynumero2
I get about the same but its a toy and I couldn;t care less about MPG as long as I have a big stupid grin on my face
word.... it was toy for me until gas prices hit $3 a gallon...

A number of issue with your mileage problem...
a. you might be running rich
b. fuel lines not connected properly
check these... when I run my bike hard, i usually get about 35-37... if I just use it in everyday use/commuting, then I average 40+.... depends on how you ride, but check the other issues... I find it hard to believe that you get that low a mileage on a fuel injected bike, mines carbed and I am beating that... something is definetly wrong...
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Old 03-23-2007, 02:18 PM   #23
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You gotta be in the powerband, otherwise lugging the engine can actually give you worse mpg.

Try riding a tank keeping the rpm's higher and keep the bike in the powerband and see what that nets you.
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Old 03-23-2007, 02:19 PM   #24
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Old 03-23-2007, 02:24 PM   #25
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I'd be lucky to get 90 -100 on my RR. I think it's 4.somethin' gal.
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Old 03-23-2007, 02:25 PM   #26
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Some other things to look into is the mods and also your weight...
If you have the 520 conversion on the bike, the mpg will drop slightly (mine did, when I had the conversion; I went back to stock)

Weight is another thing.... I know a lot of guys like to go pick up girls at random places, try picking up the little girls... I know fat girls need love too, but , not worth the cost... for real... more weight=less mpg...

Note: if a girl can benchpress your , probably not the girl for you....
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Old 03-23-2007, 02:26 PM   #27
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Just buy a Suzuki........they make fuel.
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Old 03-23-2007, 03:09 PM   #28
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A PowerCommander will only help if you have the optimal map generated for your bike utilizing a dyno with exhaust gas analysis. You may get the PC with their standard map and it runs richer! Your best bet is to talk to Andy at MetricMotorcycles and have him work you up a deal for a PC plus a custom map created on his new FactoryPro eddy-current dyno. He'll wipe the map clean and go through every throttle position/RPM combination to create a perfectly tuned bike throughout the rev range. It's the only way to go.
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Old 03-23-2007, 03:14 PM   #29
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Quote:
Originally Posted by wd40oz
A PowerCommander will only help if you have the optimal map generated for your bike utilizing a dyno with exhaust gas analysis. You may get the PC with their standard map and it runs richer! Your best bet is to talk to Andy at MetricMotorcycles and have him work you up a deal for a PC plus a custom map created on his new FactoryPro eddy-current dyno. He'll wipe the map clean and go through every throttle position/RPM combination to create a perfectly tuned bike throughout the rev range. It's the only way to go.
I think I may be stopping by there with the track bike to get it tuned once the suspension is sorted out.. This sounds amazing.
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Old 03-23-2007, 03:23 PM   #30
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I highly recommend it. I built the dyno room for him and have seen so many bikes come through there that were way out of tune after a guy slapped on a PC then watch Andy meticulously go through each stage and + or - to get the proper CO and HC figures. To have him setup and tune a bike is 200% worth the money. When you're done you'll know for sure that it's running right and have the dyno figures and EGA to back it up.

Reading plugs and sniffing exhaust fumes are for asshats!

Last edited by wd40oz; 03-23-2007 at 03:26 PM.
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Old 03-23-2007, 03:40 PM   #31
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Quote:
Originally Posted by wd40oz
I highly recommend it. I built the dyno room for him and have seen so many bikes come through there that were way out of tune after a guy slapped on a PC then watch Andy meticulously go through each stage and + or - to get the proper CO and HC figures. To have him setup and tune a bike is 200% worth the money. When you're done you'll know for sure that it's running right and have the dyno figures and EGA to back it up.

Reading plugs and sniffing exhaust fumes are for asshats!

That is the dumbest statements i've seen in awhile. While the exhaust fume tuning is very unscientific every good mechanic knows how to read plugs and is a good indicator on how your engine is running. Discounting plug reading shows your ignorance to proper engine tuning.
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Old 03-23-2007, 04:01 PM   #32
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You going to let some guy setup your race bike by looking at the color of your spark plugs? You do know that different race fuels/additives leave different colorations on the plugs don't you? I can assure you I've tuned and built a fair share of race motors and I've looked at the plugs to get a general feel for the state of tune but I'd never take my machine to a professional that relied on that archaic practice.

Talk about stupid...
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Old 03-23-2007, 04:18 PM   #33
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Now now Ladies...

I don't think that mileage is that far out of line, remember a modern sportbike motor is like a racing engine from 8 years ago.
You might get a little better mileage with a big tune up but usually bikes are pretty lean anyway so going leaner might not be a good idea.
If you got the bucks, go for a dyno tune, then you will KNOW. Otherwise, if all else seems ok... ride the out of it and try not to think how you could have saved a dollar or two on that last tank of gas.
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Old 03-23-2007, 04:21 PM   #34
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Quote:
Originally Posted by wd40oz
You going to let some guy setup your race bike by looking at the color of your spark plugs? You do know that different race fuels/additives leave different colorations on the plugs don't you? I can assure you I've tuned and built a fair share of race motors and I've looked at the plugs to get a general feel for the state of tune but I'd never take my machine to a professional that relied on that archaic practice.

Talk about stupid...

In your previous post you said looking at plugs were for "asshats." Now you say you have looked at your plugs to get a general feel. Make up your mind. I never said tune your motor from plugs alone. But it is one of many tools to use.
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Old 03-23-2007, 04:34 PM   #35
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Quote:
Originally Posted by witchdoctor575
Keep it under 5k. When I keep my rc under 5 k I get 40pg When I hammer on it I get to the upper 20's.
Your bike is a vtwin...totally different animal here.

His bike is an inline 4 with a CAT Convertor. The bike will get significantly less mileage than that of a bike with a full exhaust system without the cat. The cat requires a richer mixture (ie more gas) to function correctly. If he were to get a full system, PCIII and tuning he would see maybe a 10mpg difference or more. Bikes just made a few years ago didn't have cats in them which yeilded them higher numbers.
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Old 03-23-2007, 04:38 PM   #36
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Quote:
Originally Posted by bdmpastx
Your bike is a vtwin...totally different animal here.

His bike is an inline 4 with a CAT Convertor. The bike will get significantly less mileage than that of a bike with a full exhaust system without the cat. The cat requires a richer mixture (ie more gas) to function correctly. If he were to get a full system, PCIII and tuning he would see maybe a 10mpg difference or more. Bikes just made a few years ago didn't have cats in them which yeilded them higher numbers.
oh well i guess i'll deal with it.. i don't really care too much about the cost of gas.. it would be nice if i could go a tad bit longer w/o stoping for gas
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Old 03-23-2007, 04:44 PM   #37
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Old 03-23-2007, 05:02 PM   #38
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i get about 150 from full to gas light (+/-) one day i noticed it droppin and when it got to 90 i changed the air filter and it was back to normal...i got 11k miles so far so unless you have way over that i dont think plugs would be an issue yet
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Old 03-23-2007, 05:04 PM   #39
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i get about 30-35 mpg when I ride hard and about 45mpg when cruising
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Old 03-23-2007, 05:09 PM   #40
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I've got 16k on mine, and I'm still getting 40-45. When do plugs usually need changed?

Britt
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