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Been wondering how muxh of a difference is 87 to 93 in mpg and power with or without a street bama tune. And if 93 worth it any way
 

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+1. I tracked mileage with both and there is no difference. My car is bone stock.

I also could tell no difference in the way the car runs.
 

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it feels like to me that it is faster and it sounds a little better to me.. haha I've noticed I get better city mpg!
 

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Since the engine was designed and tuned (stock) for 87, I use it. If/when I go the way of a tuner, then I'll head up to the 93 octane if the tune requires it. In the meantime, I stick with the 87.
 

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Been wondering how muxh of a difference is 87 to 93 in mpg and power with or without a street bama tune. And if 93 worth it any way
Unless you have a tune you will feel little to no difference, it's the tune that programs the ECU for the higher octane so it takes full advantage of it.
 

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Charlie_Santos is sure right on this

I use 87 only because I have found absolutely """NO""difference using 93 octane.

87 octane for 100 city only miles = 24.6 mpg

93 octane for 100 city only miles = 24.9 mpg

Not enough difference to not be the same.

I tested on my second tank of 93 so I know the car was running on 93 and not a mixture of 87 & 93

I could not feel any difference at all in performance.

The big difference was in the price I paid per tank.

Ronnie
 

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I use 87 only because I have found absolutely """NO""difference using 93 octane.

87 octane for 100 city only miles = 24.6 mpg

93 octane for 100 city only miles = 24.9 mpg

Not enough difference to not be the same.

I tested on my second tank of 93 so I know the car was running on 93 and not a mixture of 87 & 93

I could not feel any difference at all in performance.

The big difference was in the price I paid per tank.

Ronnie
I run 89 but that's because my hybrid tune requires it, when I'm not going full WOT I get a good solid 26mpg but without the tune I was getting 24 so the tune makes the difference if u ask me
 

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A good tune "WILL" make a posative difference

There is no argument at all from me about a good tune will not only make more usable power but will increase MPG. The more efficient you can burn the fuel the better off the car will run. The Factory Tune's are always a compromise because the Factory needs to have a car everybody can drive and be happy with.

Even Ford sells a tuner through Ford Racing for the Mustang owners that want a better tune but so far it is only for the GT models. I'm hoping they will come out with a tuner for the V6 3.7 soon.

Ronnie
 

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Not trying to argue but I think hp gains are possible using higher octane gas. Try burning a few tanks of the good stuff and maybe you'll notice more.

Check out this video on YouTube:<br/><br/>http://youtu.be/adSx7MGTecE
I would agree with this, but only if it was tuned with the higher octane. Otherwise, I don't think it would make a difference between higher and lower octanes.
 

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Been wondering how muxh of a difference is 87 to 93 in mpg and power with or without a street bama tune. And if 93 worth it any way
Unless you have a tune you will feel little to no difference, it's the tune that programs the ECU for the higher octane so it takes full advantage of it.
Hey,

You may see a little bit of improvement if you run a higher octane, even on the stock tune. It's just a better gas, its more expensive because it's better for the car!

However, once you get a tune and we program the ECU for 93 Octane you'll notice a big gain in gas mileage, power, torque, acceleration, throttle response and much more over the stock 87 set up!

I hope this helps. Let me know if you have any questions or some need some assistance! Our Bama Performance tuning specialists are here in the building Monday-Friday from 9AM-5:30PM EST and Saturday 9AM-5:30PM EST. You can hit them up directly at 888.226.9764 and they'll get you squared away!

-Dan
 

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Hi Dan, Good to know

I just ran one tank of 93 then checked it after the second refill with the 93. My car seems to run fine on the cheap 87 octane with no problems. I like that because I'm sticking that 30 to 55 cents a gallon difference into my AM mod fund.:D

Of course I will be driving like an ole lady for a while now because I put in the Progressive insurance snap shot to try to get my insurance down. My neighbor did it and his insurance went down $140.00 every six months. That is $280.00 a year savings. Not A bad deal for my fixed income.

Ronnie
 

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Discussion Starter #14
How much of a difference would there be with an 87 octane tune vs 93 octane tune.
 

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You also gain 6hp with 93 over 87... American muscle has a youtube video showing this.
That's with a tune. Without a tune, the difference would be within a the dynos repeatability, making it tough to decipher the difference. As Dan Bailer stated, running the higher octaine allows the 93 octane tunes to take advantage of the higher octane.
 

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Ill be the guy that says it. The GT gets 12 more horsepower using premium over regular. I don't think that adaptiveness is in the v6 though
 

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Azure said:
That's with a tune. Without a tune, the difference would be within a the dynos repeatability, making it tough to decipher the difference. As Dan Bailer stated, running the higher octaine allows the 93 octane tunes to take advantage of the higher octane.
No it is not with a tune... The HP with tune from 87 to 93 is more than 6HP... I just watched the video again and the stock whp with 87 octane was 252 and stock with 93 octane it gained 7 more whp. AM ran the same set up same dyno same everything just one day apart. The only major difference was lower torque in the lower rpm range. Watch the video.

http://m.youtube.com/watch?feature=relmfu&v=adSx7MGTecE
 

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You also gain 6hp with 93 over 87... American muscle has a youtube video showing this.
I agree, I've read that with 93 the engine does detect the richer fuel and will adjust timing to increase performance. It's not a large increase like if you did a tune but you should feel alittle difference.
 
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