good news and bad news - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 12-02-2007, 11:09 AM   #1
Registered Member
 
Join Date: Apr 2007
Posts: 336
Country: United States
good news and bad news

I bought my dx coupe 3 years ago, with a dx engine and tranny.. or so i thought

the best mpg that i got was about 45 and thats with 70% highway
now i get about 30 mpg with 100% city


bad news: i found out that i have a EX tranny, the previous owner had a B18 in there, then swapped it back to a d series when he sold it to me. so ex tranny = faster acceleration and higher highway rpms. at 60 mph, im at 2500, 70 is at 3100, and 80 is at 3500 or so


good news: i drive 100% city, so i never use 4th or 5th gear for now.


no wonder my little 1.5 liter hauls *** on 1st and 2nd gear, compared to my friend's dx
__________________

civic94 is offline   Reply With Quote
Old 12-02-2007, 12:47 PM   #2
Registered Member
 
Danronian's Avatar
 
Join Date: Aug 2007
Posts: 652
Country: United States
Swap in a VX or CX tranny and you'll see your MPG go up a bit. You could turn-around and sell the EX tranny for more than the new tranny, and actually make money off the deal if you can do the work yourself.
__________________

__________________


On the never-ending quest for better gas mileage...
Danronian is offline   Reply With Quote
Old 12-02-2007, 10:20 PM   #3
Registered Member
 
Join Date: Oct 2007
Posts: 298
Country: United States
Then again, a taller transmission like a VX or CX transmission is not going to help with city MPG. In the city, you will probably not be driving fast enough to want to be in fifth gear with what you have anyway. In fact, it could make city MPG WORSE, since the taller and more widely spaced gears could keep you on the throttle harder just to keep up with traffic. I would keep the transmission you have, unless you plan to use the car more on the freeway.
StorminMatt is offline   Reply With Quote
Old 12-02-2007, 10:55 PM   #4
Registered Member
 
omgwtfbyobbq's Avatar
 
Join Date: Jul 2006
Posts: 1,516
Country: United States
Quote:
Originally Posted by StorminMatt View Post
In fact, it could make city MPG WORSE, since the taller and more widely spaced gears could keep you on the throttle harder just to keep up with traffic.
Fourth on a CX/VX trans is equivalent to fifth on an EX trans, just like third, etc... so I don't think it'll be an issue. That being said, more throttle on average is better for the vast majority of cars in a given gear.
__________________
Quote:
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.
omgwtfbyobbq is offline   Reply With Quote
Old 12-02-2007, 11:09 PM   #5
Registered Member
 
Join Date: Apr 2007
Posts: 336
Country: United States
i know that the mpg woundnt be any different in city driving, but im just a bit suprsied that i had an ex tranny all along. if i had a dx tranny i would of gotten better mpg throughout the life of the car. my best was 45 mpg, it might of been 50
civic94 is offline   Reply With Quote
Old 12-03-2007, 09:02 AM   #6
Registered Member
 
brucepick's Avatar
 
Join Date: Feb 2007
Posts: 722
Country: United States
Location: Connecticut
Quote:
Originally Posted by civic94 View Post
i know that the mpg woundnt be any different in city driving, but im just a bit suprsied that i had an ex tranny all along. if i had a dx tranny i would of gotten better mpg throughout the life of the car. my best was 45 mpg, it might of been 50
All makes sense.

However I think something must have gone bad in your system since the time you were getting better mpg earlier. Now dropped to 30, so why?

Rethinking that, maybe not. Best ever of 45 mpg at 70% highway, now 30 at 100% city. Might be reasonable. Are you on winter fuel now? Dunno if WA does that to you, but here in New England our mpg drops noticeably in late Nov. when we get that stuff.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
brucepick is offline   Reply With Quote
Old 12-03-2007, 12:01 PM   #7
Registered Member
 
Join Date: Apr 2007
Posts: 336
Country: United States
Quote:
Originally Posted by brucepick View Post
All makes sense.

However I think something must have gone bad in your system since the time you were getting better mpg earlier. Now dropped to 30, so why?

Rethinking that, maybe not. Best ever of 45 mpg at 70% highway, now 30 at 100% city. Might be reasonable. Are you on winter fuel now? Dunno if WA does that to you, but here in New England our mpg drops noticeably in late Nov. when we get that stuff.


I live in philadelphia now, yes its probably a winter mix of gas. its all city now, i never go over 30 mph on my trips, fill up once per month
civic94 is offline   Reply With Quote
Old 12-05-2007, 03:15 PM   #8
Registered Member
 
Join Date: Nov 2007
Posts: 228
Country: United States
Might've got 50 mpg at speeds of 55-60 too...

Now on my car I have no qualms about using 4th and 5th at speeds as low as 25 mph.
5th at 25 might not work with a 1.5l, but 4th sure would.
I'd be all for using at least 4th, that won't hurt for sure.
5th at 30 should be gtg as well, why not try it.
__________________
A FE gauge should be standard equipment in every vehicle.
8307c4 is offline   Reply With Quote
Old 12-05-2007, 04:12 PM   #9
Registered Member
 
VetteOwner's Avatar
 
Join Date: Mar 2007
Posts: 1,546
Country: United States
lol lucky...my chevette is 3k rpms at 58mph... lol havent had it on a highway trip but can aparently get over 40mpg even tho your running at 3500 rpm's...(touch the pedal and the car takes off like a rocket cuz its reved so high) wish i could find a 5speed tranny to swap in there...
__________________

VetteOwner is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
MPG versus air temperature and Altitude MensaMike General Fuel Topics 6 06-21-2011 06:16 AM
2012 cars 306maxi Fuelly Web Support and Community News 3 04-29-2011 05:23 AM
Ethanol toosoonold General Fuel Topics 9 06-20-2010 11:15 PM
can receipts be entered in any date order? mauirixxx Fuelly Web Support and Community News 9 08-29-2008 03:21 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:08 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.