update on 12mpg :(

beastGT · July 18th, 2008, 10:49 AM

So im half way through my tank and i took the miles driven and diveded them by gallons used and im at 11.9 mpg, the car computer is telling me 12.5. I dont see how you other guys are getting 16+ in city driving unless its the tuner changing the af ratio and timing to help that out. Maybe my car is running overly rich which might be a reason?

04GTAMPA · July 18th, 2008, 10:50 AM

Mods? recent updates?

TheUNZippee! · July 18th, 2008, 10:51 AM

Although mine gets 28-30 on the highway, I also get around 12 in town. If I really baby it, and short shift it, I can get 14-15 in town.

fdjizm · July 18th, 2008, 10:52 AM

im getting 17mpg in the city, about 25 on the highway usually i dont floor my car or rev it up, i shift at about 3000rpm and on the highway i set the cruise control at 65-70 im running 89 octane, iodk what else... are you having a little too much fun in your car? lol

TheUNZippee! · July 18th, 2008, 10:55 AM

For best mileage in town, you should be barely touching the throttle, using just enough to get rolling. Your 1-2 shift should be done asap, like at about 12-1400 rpm. The rest of your shifts should be done around 2000 rpm. If you have 4.10's like me, you can even catch 5th gear once you hit about 35-40 mph, although you will get better mileage in 4th at 35 mph if you're doing anything other than coasting or rolling gently.

Luis_GT · July 18th, 2008, 11:53 AM

your car's fine.... mine gets about 9mpg around city...

EfylSetaf · July 18th, 2008, 12:07 PM

Originally Posted by Luis_GT

your car's fine.... mine gets about 9mpg around city...

Well yeah, Luis, it takes your car an extra 25% to run that belt connected to the "I Hate Luis" subengine.

Luis_GT · July 18th, 2008, 12:13 PM

Originally Posted by EfylSetaf

Well yeah, Luis, it takes your car an extra 25% to run that belt connected to the "I Hate Luis" subengine.

that it does...

tribaltek · July 18th, 2008, 12:18 PM

I get about 15mpg in the city, and thats with some pretty spirited driving. But I also throw it in 5th at 35mph at times (I have 4.10's).

Have you tried getting a different tune?

beastGT · July 18th, 2008, 02:00 PM

my car is stock with exception to the stinger axle back. I have the 3.55 gears btw. I dont have a tune on it at the moment im just wondering if that would effect it at all.

TheUNZippee! · July 18th, 2008, 02:03 PM

A tune and intake will improve mpg.

tribaltek · July 18th, 2008, 02:07 PM

When I had my 3.55 and it was all stock I got about 27mpg on the highway. With the JLT and 93 tune I got it up to 29.7mpg.

KingKelleyxSHREDx · July 18th, 2008, 02:48 PM

i get 18-19 city with 3.55.

05bluestang · July 18th, 2008, 02:48 PM

Originally Posted by TheUNZippee!

A tune and intake will improve mpg.

No it wont, a good tune and intake will fuck with your gas foot pretty serverely and there goes the mpg's again.

stanglifemike · July 18th, 2008, 03:08 PM

I dont drive lmy 06 alot, so when I do I enjoy it, mine tells me I average 16.9 mpg and I RARELY get on the interstate with it, so that is mainly city driving. I think you should be getting better than 11 or 12 mpg....

beastGT · July 18th, 2008, 04:05 PM

same here...do you think the injectors could be broke and spraying too much gas? haha im just trying to think of anything here...

RKNMACH · July 18th, 2008, 04:19 PM

I was getting around 17 in town with my dyno tune loaded. I switched back to Doug's 93 and I'm back up to the low 18's. Never got in the 12's - something must be amiss.

beastGT · July 18th, 2008, 11:01 PM

yeah maybe ill take it to ford and have them look...i figure its worth a shot seeing as i still got my full warranty. I know its a v8 and isnt meant for gas mileage but 12 is abnormally low. I am driving very easy and using cruise control at all possible times to help out the mpg but i gotta find out whats up

fullboogie · July 18th, 2008, 11:35 PM

I've only got 800 miles on my 08 with 3.31's, and my first couple of tanks netted 15.9 to 16.1 mph pure city driving. Not bad for the break in period. I hate to hear that you are getting such stink-o mileage. Something doesn't sound right.

Luis_GT · July 19th, 2008, 12:18 AM

goddamn... I'm the only one that looks at 12mpg as being holy... 17's are just a dream that will never come true...

July 18th, 2008, 10:49 AM	#1
beastGT Regular Mustang GT Join Date: Jun 2008 Posts: 119	update on 12mpg :( So im half way through my tank and i took the miles driven and diveded them by gallons used and im at 11.9 mpg, the car computer is telling me 12.5. I dont see how you other guys are getting 16+ in city driving unless its the tuner changing the af ratio and timing to help that out. Maybe my car is running overly rich which might be a reason?

July 18th, 2008, 10:50 AM	#2
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	Mods? recent updates? __________________

July 18th, 2008, 10:52 AM	#4
fdjizm Regular Join Date: Aug 2007 Posts: 103	im getting 17mpg in the city, about 25 on the highway usually i dont floor my car or rev it up, i shift at about 3000rpm and on the highway i set the cruise control at 65-70 im running 89 octane, iodk what else... are you having a little too much fun in your car? lol __________________ 08 Mustang GT/CS, Boom Tubes, 4.10's, BamaChips Tune.

July 18th, 2008, 12:18 PM	#9
tribaltek Hardcore Enthusiast 2005 Mustang GT 13.02@107 Join Date: Feb 2008 Location: Detroit Posts: 1,323	I get about 15mpg in the city, and thats with some pretty spirited driving. But I also throw it in 5th at 35mph at times (I have 4.10's). Have you tried getting a different tune? __________________ '05 GT, 5spd, Black, JLT, 93 Race, 4.10's, FRPP Hot Rod Cams, UDP, MGW, OBX LT's & O/R-H, Bassani Race, Prothanes, HIDs, 18" Bullits, SHR Louvers, Black Billet Grille, GT500 Spoiler, Seq. Tails Cammed Crew #1 RADMUSTANGS Store

July 18th, 2008, 02:07 PM	#12
tribaltek Hardcore Enthusiast 2005 Mustang GT 13.02@107 Join Date: Feb 2008 Location: Detroit Posts: 1,323	When I had my 3.55 and it was all stock I got about 27mpg on the highway. With the JLT and 93 tune I got it up to 29.7mpg. __________________ '05 GT, 5spd, Black, JLT, 93 Race, 4.10's, FRPP Hot Rod Cams, UDP, MGW, OBX LT's & O/R-H, Bassani Race, Prothanes, HIDs, 18" Bullits, SHR Louvers, Black Billet Grille, GT500 Spoiler, Seq. Tails Cammed Crew #1 RADMUSTANGS Store

July 18th, 2008, 02:00 PM	#10
beastGT Regular Mustang GT Join Date: Jun 2008 Posts: 119	my car is stock with exception to the stinger axle back. I have the 3.55 gears btw. I dont have a tune on it at the moment im just wondering if that would effect it at all.

July 18th, 2008, 02:48 PM	#13
KingKelleyxSHREDx Regular 07 Mustang GT Join Date: Jul 2007 Posts: 139	i get 18-19 city with 3.55. __________________ 07 GT Black with Gold Stripes Mostly stock (for now. . . poor college student, saving for more!) Roush axle backs 3.55 gears

July 18th, 2008, 03:08 PM	#15
stanglifemike MM Fanatic 06 GT & 98 GT Join Date: Dec 2006 Location: Douglasville, GA Posts: 3,208	I dont drive lmy 06 alot, so when I do I enjoy it, mine tells me I average 16.9 mpg and I RARELY get on the interstate with it, so that is mainly city driving. I think you should be getting better than 11 or 12 mpg.... __________________ 98 GT: Accufab, Steeda, BBk, Mac, FlowMaster, Moser, Ford Racing, American Racing, Nitto, Eibach, SCT, FPS 06 GT: JLT, SCT, FRPP/Borla, Pypes, Steeda, BamaChips RadMustangs Store

July 18th, 2008, 04:05 PM	#16
beastGT Regular Mustang GT Join Date: Jun 2008 Posts: 119	same here...do you think the injectors could be broke and spraying too much gas? haha im just trying to think of anything here...

July 18th, 2008, 04:19 PM	#17
RKNMACH Regular 2006 Mustang GT Join Date: Jun 2008 Location: NOVA Posts: 80	I was getting around 17 in town with my dyno tune loaded. I switched back to Doug's 93 and I'm back up to the low 18's. Never got in the 12's - something must be amiss. __________________ 2006 GT, 5 speed, black on black Steeda Tri-ax, Steeda CAI w/high flow elbow Magnaflow catbacks, Steeda UDP's, FRPP 4.10's Spydershaft, Tokico D-Specs w/remote adjusters CHE K-member with torque limiters SoS three gauge pillar

July 18th, 2008, 11:01 PM	#18
beastGT Regular Mustang GT Join Date: Jun 2008 Posts: 119	yeah maybe ill take it to ford and have them look...i figure its worth a shot seeing as i still got my full warranty. I know its a v8 and isnt meant for gas mileage but 12 is abnormally low. I am driving very easy and using cruise control at all possible times to help out the mpg but i gotta find out whats up

July 18th, 2008, 11:35 PM	#19
fullboogie Regular 2008 GT Join Date: Jun 2008 Location: Houston Posts: 86	I've only got 800 miles on my 08 with 3.31's, and my first couple of tanks netted 15.9 to 16.1 mph pure city driving. Not bad for the break in period. I hate to hear that you are getting such stink-o mileage. Something doesn't sound right. __________________ Fuel Altereds Rule The Earth

Threads Similar to: update on 12mpg :(
Thread	Thread Starter	Forum	Replies	Last Post
12mpg?	beastGT	2005+	32	July 18th, 2008 03:14 PM
Pro 5.0 shifter update/vid update	07stanggt	2005+	43	February 29th, 2008 10:17 PM
update on the 01	kennyGT	99-04	0	February 2nd, 2008 01:36 AM
Update on Nothing	MSTGGT00	99-04	6	June 8th, 2007 10:53 PM
Little Update	1Clean6	V6 Mustangs	8	October 12th, 2005 10:25 PM

All times are GMT -4. The time now is 07:48 AM.
Contact Us - Modded Mustangs - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2008, Jelsoft Ent. Ltd. & SEO by vBSEO 3.1.0 ©2007, Crawlability, Inc.