Civic VX cant get over 41ish MPG

[Mira]

Woohoo! Congrats on puttin' er right. Now onward to level 5 VX power!

I gotta tell ya, I'm feeling a bit of lean burn envy.

[Mira]

Oh, and I noticed you were in the PA area. Have you come across this thread?

http://ecomodder.com/forum/showthrea...hip-25691.html

[jlk16188]

so i spoke too soon. My MPG's have gotten slightly better but i am only at 44 ish MPG now rather than 40-41.

any ideas?

[Ryland]

Have you been keeping it in gear while slowing down and using premium/non ethanol gasoline?

What size/type of tires do you have?

[jlk16188]

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. 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

[jlk16188]

This is why I'm so puzzled. I feel like I'm doing everything right. I should by all means be able to get 50 mpg without a mpgurio or mods with my vx in stock form

[California98Civic]

Originally Posted by jlk16188

This is why I'm so puzzled. I feel like I'm doing everything right. I should by all means be able to get 50 mpg without a mpgurio or mods with my vx in stock form

Sorry your meeting with frustrations... BUT you are getting FE numbers that would be great if you were driving very well in a Civic that does not have lean burn, so I think you are not getting into--or staying in--lean burn mode. In post #17 I asked a question about your throttling that I don't think you've answered yet, but it might have the key to your problem. Might. Are you really hitting the throttle to 75% on each of your accelerations? That seems like hard tramping on the pedal. Pulse and glide on the freeway would keep you out of lean burn too, I believe, from what I have read. Also, reconsider thinking of gauges as mods, if that's what you're doing. If there is some way to get AFR data in your OBD1 vehicle, take it. That would be the easiest way to know if you're in lean burn. I think your hilly environment might also mean it is hard for you to get into lean burn--again because of throttling. Others who actually own and drive these cars can correct me as needed...

[Ryland]

Originally Posted by jlk16188

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.

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.

[jlk16188]

This last tank I used premium and saw 44 mpg. I can't buy tires Skinnier than 175 anywhere around me and I tried. The tires on it are brand new so I won't be swapping them out anytime soon. Sounds to me like I don't have a choice, either deal with this kind of mileage or start modifying the car and go to what I consider extreme hypermilaging techniques, ie eoc

I also just filled up again and noticed i had one rear tire down to 25ish psi and both fronts were around 35 so i pumped them all back up.

[jlk16188]

Just picked up my VX from the body shop. It has been down for almost 2 weeks getting all the rust removed. Hopefully i can get some better MPG numbers this week.