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-   -   Better MPG? (https://www.rx8club.com/rx-8-discussion-3/better-mpg-194023/)

MarcMiller 03-27-2010 01:05 PM

Better MPG?
 
What mods can i do to increase my mpg?
i dont think im getting 18 like i should..i go through gas 3 times a week on driving normally...i cant afford that.

my old contour got 20mpg and it would last me almost a week.


I was thinking a cai would help alittle? not too sure.

anyone get better gas milage due to mods?

Let me know.

CTrx8 03-27-2010 01:07 PM

vtec mod.

tbk 03-27-2010 01:08 PM

1.buy a civic
2.use as dd
3.?????
4.PROFIT!

deadphoenix52 03-27-2010 01:50 PM

what mileage are you getting? and what kind of driving do you do?

zoom44 03-27-2010 02:07 PM

shift

MarcMiller 03-27-2010 03:36 PM

idk how to tell what im getting now...i have an AT and i dont use the manual shift much because i think auto is faster...i dont really drive around THAT quick either.

mines an 04 too

expo1 03-27-2010 03:47 PM


Originally Posted by MarcMiller (Post 3489144)
idk how to tell what im getting now..

When you fill up next time zero out the trip odometer.
Next time you fill up note the gallons of gas it took to fill back up the car.
Divide the miles driving according to the trip odometer by the gallons of gas you put in.
Example 250 miles on the odo & 13.5 gallons to fill up 250 / 13.5 = 18.5 MPG.

But based on your car being a 4-speed AUTO and the general traffic in your area 18 MPG would be about the best you can expect. The only thing you can do to improve MPG is to increase the amount of time you spend in high gear.

Mike

CyberPitz 03-27-2010 03:48 PM

Drive less aggressive
Tune up
Civic

Comparing your Contour mileage to the RX-8 is a big mistake...

redcopper06 03-27-2010 05:03 PM

mods that lower weight, premium fuel, clean filters & fluids, keep a good distance from the car in front (less braking, more coasting gives better milage than following too closely), max air pressure in tires, avoid traffic jam areas

jasonrxeight 03-27-2010 06:33 PM

well you got the wrong car if you looking for gasmillage.

mscamp02 03-27-2010 06:45 PM

first you need to actually tell us what your current mpg is, what style of driving you have, where you drive, and no you may not get 18mpg, most people on here actually dont.

and you bought a sports car, I mean really what were you expecting??

77mjd 03-27-2010 07:15 PM

One thing to start with is to check the coils and plugs and replace if necessary. If they are both bad, that could be hurting your mpg.

Old Rotor 03-27-2010 07:18 PM

Always coast in gear not in neutral. Gas is used to keep the idle going in neutral.

MarcMiller 03-28-2010 01:01 AM


Originally Posted by expo1 (Post 3489149)
When you fill up next time zero out the trip odometer.
Next time you fill up note the gallons of gas it took to fill back up the car.
Divide the miles driving according to the trip odometer by the gallons of gas you put in.
Example 250 miles on the odo & 13.5 gallons to fill up 250 / 13.5 = 18.5 MPG.

But based on your car being a 4-speed AUTO and the general traffic in your area 18 MPG would be about the best you can expect. The only thing you can do to improve MPG is to increase the amount of time you spend in high gear.

Mike

okay next full fill up i do ill figure it out.

fobjr101 03-28-2010 01:08 AM


Originally Posted by tbk (Post 3489023)
1.buy a civic
2.use as dd
3.?????
4.PROFIT!

haha I love it. :rollingla

fobjr101 03-28-2010 01:09 AM


Originally Posted by Old Rotor (Post 3489302)
Always coast in gear not in neutral. Gas is used to keep the idle going in neutral.

Isn't gas also used in gear? And the rev is higher meaning more gas is flowing into the engine, right or is this completely wrong?

swoope 03-28-2010 04:56 AM

move out of the city..

beers :beer:

ArXate 03-28-2010 06:27 AM


Originally Posted by fobjr101 (Post 3489545)
Isn't gas also used in gear? And the rev is higher meaning more gas is flowing into the engine, right or is this completely wrong?

Wrong according to MazdaManiac and others.

nycgps 03-28-2010 07:20 AM

This is so f-ing funny.

For some reason, some people with RX-8 always want to get the same or higher than the retarded EPA rating. and I just don't see this happening on other sport cars group.

If u want wonderful mpg. go get another car.

MarcMiller 03-28-2010 11:23 AM

i dont want wonderful gas milage i just want to know ways to increase it.
i obviously bought the car knowing im gonna have to pay more for gas...asking ways to increase my gas milage isnt hurting anything tho?

wb rx-8 03-28-2010 12:02 PM

i have a 09 wrx and i get 23mpg =] and thats city. the reason why i got rid of the 8 is cuz i was sick and tired of filling it up every other day cuz i commute far

Loki 03-28-2010 01:30 PM


Originally Posted by nycgps (Post 3489701)
This is so f-ing funny.

For some reason, some people with RX-8 always want to get the same or higher than the retarded EPA rating. and I just don't see this happening on other sport cars group.

If u want wonderful mpg. go get another car.

The MPG thing gets a lot of attention. You google Rx8 you're going to find mention of it everywhere, so its more on people's minds than other cars. Someone said "OMG it gets horrible mileage" because they couldn't find anything negative to say and now that's the reputation we get to live with. Me, I'm tracking MPG to see how I can improve it through driving better, just like trying to improve track times, etc. So far I've found, by the way, that grannying it gets you worse MPG than being moderately aggressive.

tza0001 03-28-2010 01:34 PM


Originally Posted by MarcMiller (Post 3489835)
i dont want wonderful gas milage i just want to know ways to increase it.
i obviously bought the car knowing im gonna have to pay more for gas...asking ways to increase my gas milage isnt hurting anything tho?

Drive less

Old Rotor 03-28-2010 04:07 PM


Originally Posted by fobjr101 (Post 3489545)
Isn't gas also used in gear? And the rev is higher meaning more gas is flowing into the engine, right or is this completely wrong?



I have read on here that the gas is shut off when coasting. I have a Scangauge and watched the MPG go from what ever(depending on how deep my foot is in it) too 999.99 when I lift my foot off the accelerator. Now it does not always shut off but will more readily when decelerating harder. Any one else's thoughts on this.

jefecito87 03-28-2010 04:19 PM

drop a corvette engine in there you go better gas mileage and more power or do what one of the members here did he put an sr20 in im sure thats up on 20 something mpg.
the gas on rotaries is pissing me off i believe its a 15.9 gallon tank technically if i got the 18mpg i should get 280 miles to a tank i get like 230 before im back at the station

and as for the mpg meter going sky high ive been in plenty of cars with those in them and in my friends v8 durango it was always around 12 in high once he let go of the gas it went sky high to 60 70 my friends old GTP did the same i remember once he was doing 100+ and it was reading 25mpg explain that one..... we both are still baffled on that one


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