Tune Gas milage loss? - Mustang Evolution

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Old 02-18-2015, 06:12 AM   #1
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Tune Gas milage loss?

Just bought a roush axle back and SCTX4 with a custom 93 race tune. Love the difference In sound and in power. I knew the roush would sound good but damn it sounds GREAT. Only thing i have a issue with is my gas milage dropped about 6mpg to around 10.8-12 mpg now. Is that normal.. It dont bug me i just wanted to make sure it wasnt a big problem
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Old 02-18-2015, 06:52 AM   #2
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Who's tune?
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Old 02-18-2015, 06:59 AM   #3
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Old 02-18-2015, 07:22 AM   #4
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Data log it for them and see if they'll revise it for you. You should be getting much better gas mileage than that.
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Old 02-18-2015, 07:24 AM   #5
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Yea I was getting 17.8 avg before the tune
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Old 02-18-2015, 09:03 AM   #6
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You should be getting the same or better with a tune. Or maybe your foot got heavier with the mods =)

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Old 02-18-2015, 10:59 AM   #7
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Quote:
Originally Posted by Jstorm View Post
Just bought a roush axle back and SCTX4 with a custom 93 race tune. Love the difference In sound and in power. I knew the roush would sound good but damn it sounds GREAT. Only thing i have a issue with is my gas milage dropped about 6mpg to around 10.8-12 mpg now. Is that normal.. It dont bug me i just wanted to make sure it wasnt a big problem
Hey Jstorm,

I'm glad you are enjoying your new tune when it comes to power, Bama's V2 Tunes are out of this world!

In regards to the MPG, I have yet to hear of a tune dropping them by that much unless someone can't seem to get their foot off the pedal!

Are you noticing this on the race tune or performance tune?

Regardless, the Bama team can definitely look into this for you and get you dialed in to your liking!

Shoot me over a PM with your order # and contact info and I will have one of the Bama Tuning Specialists reach out to you!

Looking forward to hearing back.

-Will
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Old 02-18-2015, 11:56 AM   #8
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How are you calculating MPG?

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Old 02-18-2015, 12:39 PM   #9
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Using the mpg gauge. yea I been heavy on the gas but not that heavy.. it's back up to 14ish right now.. running the race tune... I've been watching my gas gauge since I drive alot and it doesn't seem like the mpg is that low...maybe my gauge just went funky or something
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Old 02-18-2015, 12:58 PM   #10
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Tune Gas milage loss?

If u have 3.73 gears and they tuned it for 3.31 gears then you would see about a 6mpg loss in the calculations. I ran a race tune that was for the stock 3.31 for about a day before I got the retune for 3.73 gears and I was getting like 24-25mpg without even trying to conserve gas. After the gear retune the mpg became like 17/18mpg.

Just thinking of possible scenarios that may cause a huge drop in mpg. Maybe you forgot to list 3.73 gears as your gears.

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Old 02-18-2015, 05:00 PM   #11
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i believe there 3.31 gears
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Old 02-19-2015, 06:15 AM   #12
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I trust the gauge as far as I can throw the car. I just do miles per gallon.

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Old 02-19-2015, 11:45 PM   #13
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could possibly be weather related as well? colder temperatures seem to have a pretty big impact on gas mileage specifically in short trips due to the engine not heating to operating temperature as quickly or often.
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