My 95 GT gets about 22 mpg. I heard that a cat-back system really improves fuel efficiency. Does anyone know by how much and what other mods have really proven to improve performance and efficiency?
5.0 Fuel Efficeincy
- Thread starter flyboy_323
- Start date
BlueOvalStangGT
Active Member
I think the 5.0 is more fuel in-efficent then it is efficeint. Not sure about exact numbers but underdrive pulleys well help, if you can keep your foot of the gas. Weight reduction will help ya there too
SmithCobra95
New Member
wow u are really lucky if you are getting 22 mpg...i get about 16-18 on the freeway and abotu 12-14 in the city 
. if you start doing mods such as cam and other major things your mpg will go down quite a bit, but pulleys might give you a little better gas milage, but nothing significant.
. if you start doing mods such as cam and other major things your mpg will go down quite a bit, but pulleys might give you a little better gas milage, but nothing significant.
94_Teal_GT
Founding Member
My GT averages 23.6-24.5mpg. I drive 63miles round trip M-F, mostly interstate with about 10-12miles of city driving per day. I only have the mods in sig, and 158k miles. FWIW I added the u-drives and 180* t-stat at the same time and gained 1-1.5mpg in average.
The Merc gets 22mpg on the highway with the A/C on!
The Merc gets 22mpg on the highway with the A/C on!
Car Nut
Founding Member
I get about 22-23 on interstates and 15-17 in town. A/C doesn't seem to have any effect on mine.
Last year, on a very long trip using cruise control, I got 25.4mpg. Lots of cops the whole way so I stuck it on 74 and took it easy.
Good luck on the gas pedal idea! With each mod I add, that gas pedal goes down more frequently.
Last year, on a very long trip using cruise control, I got 25.4mpg. Lots of cops the whole way so I stuck it on 74 and took it easy.
Good luck on the gas pedal idea! With each mod I add, that gas pedal goes down more frequently.
Yeah, I know it's kinda a strange question in a stang forum because if we wanted fuel efficiency, we would be driving honda CRX's, right? But gas just broke $2.50 where I'm at and every little bit helps.... 
Plus, it gives me a good justification to explain to my parents why I'm spending money on modding my car out instead of school 
Plus, it gives me a good justification to explain to my parents why I'm spending money on modding my car out instead of school 
![95GTvert[bv12]](https://cdn.stangnet.com/data/avatars/s/15/15495.jpg?1322927674){kind=avatar}
95GTvert[bv12]
Founding Member
Joe 5.0
Founding Member
It is VERY rare that I get less than 20mpg combined. I drive my car pretty hard, and on the expressway I cruise at about 80mph.
My mpg actually increased in the city when I went to 3.73 gears.
I got 26mpg on a 100% highway trip to kansas last year, cruise set at 75mph.
Its when you do a bunch of mods that your mpg will go down. Forced induction, stroker kit, H/C/I all will hurt fuel efficiency. More hp = more air = more fuel = less fuel mileage, but def more fun.
My mpg actually increased in the city when I went to 3.73 gears.
I got 26mpg on a 100% highway trip to kansas last year, cruise set at 75mph.
Its when you do a bunch of mods that your mpg will go down. Forced induction, stroker kit, H/C/I all will hurt fuel efficiency. More hp = more air = more fuel = less fuel mileage, but def more fun.
BlackVert
15 Year Member
i get about 17 on a mixture of about 1/2 city and 1/2 highway. on the highway i see about 23. but my adjustable fuel pressure regulator was bad and had a small leak which i'm sure didn't help. i just replaced it with a stocker today and filled it up. i'll know in about 5 days what my new mileage is.
then again, that is with 3.73s and my speedo is off, so the odometer is off too, so who knows if it is really 17 miles or not ...
then again, that is with 3.73s and my speedo is off, so the odometer is off too, so who knows if it is really 17 miles or not ...
BlackVert
15 Year Member
Rootus
Officially Addicted
Running properly, both get about the same.Black96VertGT said:i wonder how the 5.0s compare to the 4.6s ....
viperos
New Member
well, I got about 16mpg stock... then I did a O/R H, and screwed up my TB and TB Plate position, then got 20-22 city average... fixed the TB, now around 18-20 average city...
-if you're getting 22, just be thankful, and NEVER try to do better, you'll proably just end up hurting it accidentally
-if you're getting 22, just be thankful, and NEVER try to do better, you'll proably just end up hurting it accidentally
NIN
New Member
95GTvert[bv12]
Founding Member
NIN said:
6 speed weights to much and most conservative tunes richen the car up like a pig so it won't ping.....now a Geforce with the .54 overdrive (same as 6th gear) that would help and a lean tune
super302
I'd do anything for free Bapples
Bottle of fuel injection cleaner once in a while makes a big dif. (only 99 cents at o'reilys) u/d pulleys and k&n air filter will help.
But most importantly, keep you foot off the gas pedal
My personal best is 21mpg in all city driving
But most importantly, keep you foot off the gas pedal
My personal best is 21mpg in all city driving
viperos
New Member
you know, it's really funny, I had to dump my emissions controlls to get good gas milage, and I still pass emissions testing too 
-why the crap did they put those restrictors and cats on there in the frist place?
-why the crap did they put those restrictors and cats on there in the frist place?
Similar threads
