I recently read a thread in which someone stated, "if you're one of those people that shift at 2000 rpm, start shifting around 3000-3500 rpm, you'll start noticing better acceleration and better fuel economy for not bogging your motor." Is this true? As gas prices rise once again ($3.09 for 87octane and $3.29 for 91octane here in CT) i wanted to start a discussion as to which rmps to shift at (manual trannies) to get the best gas mileage. Obviously shifting at 5000 isn't ideal but is shifting at 2000 bad as well? What does everyone think? Anyone have any experiments with this?

 

I'd say your best gas mileage is going to be between 2500-3000. Personally I drove shifting @ 2krpm and got about 28mpg city. Mod after mod my driving habits have changed and I shift around 3500-4k now and I'm getting about 21mpg, but I'm also experiencing fuel delivery issues, so now's no the best time to check heh.

I don't believe shifting @ 2,000 is bogging down your motor, your just won't be accelerating very fast.

 

damn sucks about the $3.09. I'm paying $2.95 for reg still. About $3.09 for 89 where I go for gas. No 91 for time being, too expensive.

This thread will probably start conflict or get locked because gas mileage is not a topic people like to talk about on here haha. I would say that you shouldn't worrying about bogging at 2k. You should be shifting at 3k at least is what I've always been told.

 

i did something like that today and the tank meter seemed to move slower, but its not definitive.

Thou i was also passing all the cars around me. the vq was very nice sounding!

 

SERIOUS?!?!? man i drove a whole tank at 70 mph and only got 26. 28s some record **** on here, especially for city

 

I shift at about 3K or so - drive 75-80 and get about 24 MPG combined.


At 3.81 a gallon for 91.


Shoot me now.

 

im usually runnin 21s city and that's damn good from what i hear on here

but i guess not

 

I agree. I have a stick and get about 17 mpg at best.

 

For the best fuel economy without having dump trucks pushing your rear bumper, shift at 3k and accelerate slowly. Don't do that engine braking crap (use your brakes) and avoid making sudden jabs at the throttle when you shift.

Dave

 

I always got the average 21mpg city. When talking about 28, I'm pretty sure that's highway driving.

Yeah I heard acclerating slowly saves you more gas than doing it quicker.

 

I shift my auto at 6500 RPM's and get 35 mpg city.

 

this post wasnt meant to be one of those typical "what gas mileage do you get" posts. i basically know the max's average gas mileage but what i wanted to touch on was the "bogging down" aspect of the engine. Is this true that this will hurt your gas mileage? Does the engine get bogged down if you shift at lower rpms which would consequently result in worse gas mileage? If so, does anyone know the appropriate shift points the motor will be the most efficient at?

 

I shift at 9,327 rpms night and day and im usually around 42.8 mpg.

 

Why did you ever sign up to be a member on this site?

 

to **** you off

 

Must be a Vtec, GSR swap

 

last 4 posts and udienow's post is why these threads get locked. It was fine until someone decides to be funny or sarcastic, and then every other person jumps on and a mod locks it. Civilized conversation? Not on the org

 

I shift at 3k with my manual. I get superb fuel mileage. Last saturday morning, I went to the gas station. I put $30 of the shell V-Power in my car. It got me 3/4 full tank. I need gas today. V-Power is 93 octane and I didn't beat on my car, except once when I raced my buddy in his civic SI. The V-Power out here is like $3.09 a gallon. The most I've seen it go for locally is $3.13

 

I wrote that quote and to answer your question... Bogging the motor is laying into the throttle at low rpms and thereby wasting fuel because motor hasn't reached a more usable portion of its powerband. If you accelerate SLOWLY at low rpms by BARELY touching the throttle you may still save fuel because the motor isn't bogging out. But... if you accelerate this slow, you will have cars lining up behind you.

If you truly want to save fuel, drive slower without any rapid accelerations or deccelerations. Adjust shift points so that once you reach the next gear, you won't be bogging your motor. Try to use as little throttle as possible going uphill while staying within the torquey, usable part of your powerband. Feel free to pick up some speed going downhill so that you can make up the next hill without using a lot of throttle.

And to dgeesaman's credit, he already answered the question.

 

haha youre funny. but yet really dumb.

 

Thanks alot FatantasyGod. I'm glad that some people have taken this post seriously and not just as a place to rack up pointless comments. Gas prices are a killer now so when i read your post it sparked the question.