For gas mileage reasons, I shift around 1800 RPMS and I'll be in 5th at 30 miles an hour. I've found by doing htat, I'll actually get the 31 city I'm supposed to get. If I shift at 3k rpms, I get around 26-28 MPG.

 

i shift what the manual says to for best fuel economy , which is like about 3-3.4k rpm, but i do about 2.5k to 3.5k on like flat land, or if im climbing a hill i leave it on low gear, but shifting to early while accelerating can ruin fuel economy because the ecu going to think its under a load so it throws more fuel instead of less

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Revolver123 &raquo;</TD></TR><TR><TD CLASS="quote">For gas mileage reasons, I shift around 1800 RPMS and I'll be in 5th at 30 miles an hour. I've found by doing htat, I'll actually get the 31 city I'm supposed to get. If I shift at 3k rpms, I get around 26-28 MPG. </TD></TR></TABLE>

HOLY SHHIT 1800 rpms... im guessing you dont drive on the highway and, 31 city? that sucks for shiften 1800, i shift at a normal 3-4k and i know i get much more than that, havent calculated it but, last time i filled up a 13.57 gallon tank i lasted 2 weeks and 2 days, i drive almost exactally 20 miles a day for work 6 days a week and then out whenever i go out. do the math. oh the next time i gassed up it was 13.4 gallons. haha damn i cut it close!

 

With my '93 hatchback, I just listin to when the car needs to upshift or downshift. With such a light car, it's easy to get good gas mileage. And i also have a shift light to indicate when i should shift for the best gas mileage. Unfortunatly in the CX model, it didn't come with a tachometer, so i can't tell you the RPM's i shift at, but i know if i follow my shift light for economy, i usually have to shift early.

 

Like the sig Sprinter86, Evangelion fan?

 

just before 3k, thats the normal way.. (on flat), but up hills i will shift around 3.8 k or something

 

2.5k when the roads are clear and 3k when cars are behind me.

 

8k when I feel like moving. 4-5k normally.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by andyman97 &raquo;</TD></TR><TR><TD CLASS="quote">8k when I feel like moving. 4-5k normally.</TD></TR></TABLE>

It's rather difficult to pull 8k on a stock ECU.

 

2.5k to 3.5k depending on the gear. I get 35-40mpg with lots of redlines mixed in...

-bone stock 01 EX

 

Shifting to 5th at 30 is going to hurt your mileage 98% of the time. Only exeption is if your going down a big grade. I would recomend (flat ground) minimum speed 25 for 3rd, 32-35 for 4th and 40 for 5th. These speeds are according to my LX and also for slow acceleration. If you are trying to get up to speed quicker it would be smarter to shift a tad later requiring less throttle rather than earlier requiring more throttle .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by toyomatt84 &raquo;</TD></TR><TR><TD CLASS="quote">

It's rather difficult to pull 8k on a stock ECU.</TD></TR></TABLE>

he has k pro.

i shift around 4k and get 33 city 45 highway

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daddy &raquo;</TD></TR><TR><TD CLASS="quote">

he has k pro.

i shift around 4k and get 33 city 45 highway</TD></TR></TABLE>

I know he does, silly. I was making a point.

 

haha ok lol

 

you and your GT30... i shift whenever my tranny wants to. im the bitch of the relationship

 

i shift like at 4000-5000rpms, all day, i need a kswap , d17 is slowwwwwwwwwwww

i still get like 320-380miles/tank

 

when i had the d17 I could smash all day and still get 40+mpg lol

 

How does shifting to 5th at 35 hurt gas mileage? If the speed limit is 35, wouldn't you wanna rev at the lowest RPM possible?

I just switched to a Civic from an 06 mustang. I shifted at 1800 RPMs all the time and that was the manufacturer recommendation. But on the mustang, 1800 RPMs = 11 mph 1st to second = 20 mph 2nd to 3rd = 30mph = 3rd to 4th = 40 mph 4th to 5th.

It doesn't make sense that the ECU would force more gas into the engine if it's revving higher than idle speed.

 

your not trying to keep rpms low as much as keep yoru engine at its maximum efficiency. which is not necessarily at the lowest rpm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daddy &raquo;</TD></TR><TR><TD CLASS="quote">your not trying to keep rpms low as much as keep yoru engine at its maximum efficiency. which is not necessarily at the lowest rpm.</TD></TR></TABLE>

 

You cant compare shift patterns when your talking about a mustang and a civic. Im guessing you had the V6, it has a completly different power curve. First off it has a lot more torque at low rpms with 240ft/lb peak and is a 4.0ltr compared to a 1.7ltr in your civic. Honda is known for having smaller engines but are superbly built to be efficient and able to drive all day everyday at higher rpm's than its bigger enemies that fall off at those higher rpm's. The d17, especially non v-tec model, just isnt one of hondas engines that begs to be driven above 4-5k.

To check to see if being in 5th while doing 35 is the most efficient gear pay close attention to your throttle foot. Check to see how much gas your needing to give it to drive at the necessary speed. A lot of times in to tall of a gear you will have to push the throttle further to do the speed you require. Shifting down a gear you will be able to tell that your car will have more power with less movement of the throttle. Return t 5th gear once your at a speed high enough that you wont have to use more throttle than you were in the lower gear.
You should be able to never need to give more than a 1/3 throttle or so including all types of driving situations. Shifting should start to be based on what the road and traffic are doing. Is the road going up? little downhill? how fast acceleration do you require? My mom happens to have a technique somewhat similiar to your description as well as a lot of kid drivers. When she needs to speed up she will shift to a taller gear (lower rpm) and keep it floored until she finally gets up to speed causing the car to pull as much air as it can to combust uneeded amounts of gas causing the car to drive like a poor 40hp engine doing what you told it, pull a 3000 pound car. Whats better? taking a 40hp engine and pumping it with fuel or that engine at an adequate rpm range could make twice the HP which would cause less gas to pull that car.

 

MPG on ur car "Daddy"..... What model civic do you have? How did you come to the conclusion 33/45? Have you ran all freeway on a tank before? Actually getting full 45 on a specific trip or tank, or is this just a guess after getting high 30's after highway and city. Do you have any upgrades, stock size tires, stick shift? Also what speeds on the freeway do you drive?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7thgenslug &raquo;</TD></TR><TR><TD CLASS="quote">MPG on ur car "Daddy"..... What model civic do you have? How did you come to the conclusion 33/45? Have you ran all freeway on a tank before? Actually getting full 45 on a specific trip or tank, or is this just a guess after getting high 30's after highway and city. Do you have any upgrades, stock size tires, stick shift? Also what speeds on the freeway do you drive?</TD></TR></TABLE>

i consistantly average 33 on a whole tank of gas entirely city.

the last tank from full to fuel light averaged 38 about half city half highway and 4 1/4 mile runs on nitrous.

the highway numbers are from ENTIRELY highway. going from Grand Junction, Colorado to Salt Lake City, Utah. speeds ranged from 65-80 including going over a mountain pass. A/C on and using cruise control whenever possible.

run a little lower milage going to denver since you go over 2 12000 ft passes

Car is a 03 EX 5speed with intake, exhaust, lowered. at the time was running OEM rims on 205/55/R15 Toyo T1S tires.

 

i shift about 3k on the streets and on the highway i use a 50shot of noz and put it on nutural and just cruize about 60

 

alan-em2.... How many rpms do you show when your hitting 50 shots on the freeway in nutural? Do u always have the bottle ready to go?