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Old 08-13-2015, 02:00 PM   #1
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Improved MPG

Hello everyone,
I am a Newbie. I own a 2001 Bullitt GT #2172. Any recommendations for increasing my MPG? If so, what realistically MPG can I get from city/highway?
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Old 08-13-2015, 02:10 PM   #2
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Is this car bone stock

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---------- Post added at 07:10 PM ---------- Previous post was at 07:10 PM ----------

And which is it a bullit or a gt


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Old 08-13-2015, 02:41 PM   #3
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U will see little increases by upgrading the exhaust, intake, tune, and doing the normal maintenance. But the biggest thing to improve your mpg is drive like a grandma
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Old 08-13-2015, 03:00 PM   #4
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Originally Posted by ELMCO View Post
Hello everyone,
I am a Newbie. I own a 2001 Bullitt GT #2172. Any recommendations for increasing my MPG? If so, what realistically MPG can I get from city/highway?
One of my Bullitts is #2117.
I think that the original window sticker claimed 18/26 mpg. That's pretty close to what you can expect. My all time high, on the freeway, is 27 mpg, averaged over several tanks of gas, on a round trip.
You can achieve those numbers if the car is tuned properly and if you just drive the car normally, but if you get into the throttle often, the miles per gallon will drop accordingly.
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Old 08-13-2015, 03:02 PM   #5
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Jenco: This is my first Mustang. It is a 2001 Bullitt with a GT on the sides. I bought it about a month ago and I apologize that I'm not sure of all the upgrades. What I know is that it has off road pipes (standard pipes are in my garage),Diablo chip and suspension upgrade.
Bought from a guy who had two of them.
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Old 08-13-2015, 03:04 PM   #6
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Superdrift: Yea, the grandma driving is what I thought. My wife already says I drive that way....
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Old 08-13-2015, 03:24 PM   #7
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Or maybe putting taller gears in the rear might help MPG.


Pick your poison.
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Old 08-13-2015, 03:38 PM   #8
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Jenco: This is my first Mustang. It is a 2001 Bullitt with a GT on the sides. I bought it about a month ago and I apologize that I'm not sure of all the upgrades. What I know is that it has off road pipes (standard pipes are in my garage),Diablo chip and suspension upgrade.
Bought from a guy who had two of them.
Gotcha just asking the way it was worded anyway congrats on the bullit like everyone's saying if you want good mpg just stay out of the throttle but by saying that I spirit drive most of the time and I'm averaging about 20mpg the lowest I have had was 18mpg

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Old 08-13-2015, 03:39 PM   #9
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I think taller gears is really the only thing you can do that will really have a noticeable impact. Might be able to squeak out 1 MPG or so with an economy tune. These engines just guzzle gas, hard to get around it. It's a muscle car.
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Old 08-13-2015, 03:42 PM   #10
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I think taller gears is really the only thing you can do that will really have a noticeable impact. Might be able to squeak out 1 MPG or so with an economy tune. These engines just guzzle gas, hard to get around it. It's a muscle car.
I agree with this still 17 to 20 mpg isn't bad for the fun factor from the car

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Old 08-13-2015, 03:43 PM   #11
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Steeda UDP.

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Old 08-13-2015, 04:16 PM   #12
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Steeda UDP.

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The Bullitts came from the factory with pulleys already installed.
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Old 08-13-2015, 05:19 PM   #13
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The Bullitts came from the factory with pulleys already installed.
I knew that. Just testing y'all........ 😮

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Old 08-13-2015, 05:31 PM   #14
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I knew that. Just testing y'all........ 😮

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Lol

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Old 08-13-2015, 06:15 PM   #15
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I have a 89 octane MPT tune that's pretty aggressive. I get 21 MPG city driving with that tune. 93 octane race I get 18-19 city. It's all in the tune.


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Old 08-13-2015, 11:35 PM   #16
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There are bigger factors for fuel economy that are easily manipulated.

The vehicle's weight is a major hindrance in town, and wind resistance is a big factor on highway.

Weight and wind drag effect the load on the engine. You should also get a manifold pressure guage. Manifold pressure indicates the load thats on the engine. You want high vacuum in the manifold which indicates the engine is under light load. If you can see the manifold pressure, you can easily change your driving habits to optimize gear and throttle changes
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Old 08-14-2015, 12:15 AM   #17
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i noticed OP you said it had a diablo tune. what kind of tune? if it's power oriented that's gonna hurt your mpg in the end. maybe send off to diablo for a more conservative tune?
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Old 08-14-2015, 12:39 AM   #18
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Old 08-14-2015, 08:24 AM   #19
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upgraded exhaust, steeda underdrive pulleys, 75mm throttle body and an upgraded plenum. stock tune. stock 3.27 gears. I drove like a grandma, and got anywhere from 15 to 17 city, and usually 25 to 27 highway. 27 being 65, ac off and flat florida highways. 25 being 70 to 75, ac on. as for city, i found no difference in driving around keeping my rpms under 2k and just light taps on the throttle, vs 3k rpm shift and hauling *** to get to speed on the highway. of course i do have 150k mile old 02 sensors. one is rusted stuck and the hex nut is stripped, but no code.
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Old 08-14-2015, 02:36 PM   #20
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Just remember. If you spend any money at all trying to solely improve mpg, think about how long it will take to recoup that cost. You can do all the calculations to figure it out, but generally people spend a few hundred dollars and it ends up taking tens of thousands of miles, upward of 80,000 miles to recoup that money.
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Old 08-14-2015, 02:48 PM   #21
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I suggest you do a giant burnout. Rotate your tires, and then do another giant burnout.


That will reduce the rotating mass on your wheels that your engine has to accelerate!
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Old 08-14-2015, 02:49 PM   #22
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Take a grinder to every metallic object on your car and shave it to half thickness, duh.


(sry about troll post but its Friday and I haven't had a day off now in over 5 days)
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Old 08-14-2015, 02:50 PM   #23
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Wow panther you really know how to cut some weight from these cars I'm gonna have to try some of them lol

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Old 08-14-2015, 03:08 PM   #24
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Don't encourage him.^ lol

In the 60's, all of the "Big 4", (at that time) used to take brand new car bodies and acid dip them to remove a uniform amount of sheet metal thickness from the entire body of the car. It would typically make them a few hundred pounds lighter. They sold these cars to the drag racers and the "factory" teams used them as well.
Another trick was to cut and drill lightening holes in all of the non-structural pieces of the car...To the point where it looked like Swiss cheese!
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Old 08-14-2015, 03:10 PM   #25
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I suggest you do a giant burnout. Rotate your tires, and then do another giant burnout.


That will reduce the rotating mass on your wheels that your engine has to accelerate!
Actually on the contrary. That will make it an overall shorter diameter of a tire, which will essentially raise your gear ratio number. So you will have slightly higher rpms on the highway. On the highway you do want more weight to help with momentum.
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Old 08-14-2015, 05:01 PM   #26
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I was just joking I would not do any of this its not only stupid but completely unsafe just having some fun

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Hence the lol after the statement
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Old 08-15-2015, 11:52 AM   #27
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MPG

Thanks y'all. I've wanted a mustang for so long and now I have one. I feel like I'm a part of a family of people who have the same passion. I look forward to everyones post.
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Old 08-15-2015, 11:56 AM   #28
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Thank you. I didn't know that.
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Old 08-17-2015, 12:24 PM   #29
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I get 24 mpg out of my mustangs on highway/interstate with a little town driving mixed in. basically just keep the throttle as closed as possible.


Pick the RIGHT gear. don't bog around in 5th gear with your foot on the floor thinking your getting good mpg just because your Revs are low.


Pick the gear that is going to allow you to accelerate the fastest with the least amount of throttle (least amount of load on the engine). Then shift before you get to 3k.


Go over the speed limit when you're in town. seriously. cruise along at 35 in a 25. The mileage difference is huge. Your car burns X amount of gas per hour when cruising. You also go x amount of miles in that hour. The faster you can cruise, the more miles you will cover in that hour that you burnt x amount of fuel. Until you start battling wind drag, your best bet is to cruise at high speeds with low throttle position.


Now getting into physical aspects of the car: Weight, combustion efficiency in the engine, and wind drag all matter. Bumping the compression up and making your combustion chamber ignite fuel at a more concentrated and ideal time is going to help make more power with a given amount of fuel, therefore not needing as much of it to accelerate your 3500lb car.


Making your car lighter (right down to the rims and tires) is going to help a lot in town.


Making it have less drag is going to help a lot on interstate.
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