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Old 05-06-2013, 10:17 PM   #28 (permalink)
Ryland
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Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,903

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
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Quote:
Originally Posted by jlk16188 View Post
I coast in neutral on long down hill sections. I have multipe down hill sections in my daily commute that are over 2 miles long each. I do slow down in gear. I have tried eocing but I'm not a fan of it since my vss and odometer don't work with the key off.
Either put it back in to 5th gear and take your foot off the gas or turn the key back one (and only one!) click so the engine turns off, count to 3 then turn it back till the dash lights turn on you will have speed and odometer back, make sure at this point that the tac is reading -0- (if the tac jumps up, try again) if you do this then you will use no gas at all over those 2 miles, as it is you are using gas to keep the engine moving, the engine is doing nothing but sitting there for 2 miles burning gas, if you are going 60mph then this is like letting the car sit in your drive way idling for 2 minutes if you are only going 30mph then it's like starting you car up, going back inside to make a cup of tea and drinking half that cup of tea! at the very least put it back in 5th gear and take your feet off all pedals.

Quote:

I don't want to do any mods until I can get the car to meet the epa estimates. I'm running 175/70/13 tires at 48 psi and you cannot buy non ethanol gas within a 100 mile radius of where I live
Try Premium and see if it's just not labeled as 100% gasoline, but the ethanol in the gas is killing your mileage by as much as 15%, also try checking at other gas stations or asking at motorcycle shops because older 2 stroke motorcycle engines will burn holes in pistons with Ethanol
Your tires are also wider then stock, if they are not low rolling resistance tires then they are wider then stock tires that are higher drag then stock do you have two hurdles to get over, getting LRR tires will also help get you up to/over 50mpg even if they are in that wide/heavy size.
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