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Old 12-03-2012, 04:25 PM   #1
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87 or 93 octane

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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Old 12-03-2012, 08:00 PM   #2
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For 93 without a tune, all that's happening is your wallet getting lighter.
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Old 12-03-2012, 08:31 PM   #3
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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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Old 12-03-2012, 08:40 PM   #4
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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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Old 12-04-2012, 06:10 AM   #5
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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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Old 12-04-2012, 06:28 AM   #6
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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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Old 12-04-2012, 07:32 AM   #7
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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.

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Old 12-04-2012, 07:35 AM   #8
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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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Old 12-04-2012, 08:39 AM   #9
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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.

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Old 12-04-2012, 09:23 AM   #10
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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
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Old 12-04-2012, 09:27 AM   #11
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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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Old 12-04-2012, 10:17 AM   #12
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Originally Posted by ebgonzalez1 View Post
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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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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Old 12-04-2012, 10:44 AM   #13
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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.

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.

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Old 12-04-2012, 10:52 AM   #14
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How much of a difference would there be with an 87 octane tune vs 93 octane tune.
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Old 12-04-2012, 11:12 AM   #15
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How much of a difference would there be with an 87 octane tune vs 93 octane tune.
A decent amount man, not like 50HP or anything but you will really feel it compared to the lower octane
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Old 12-04-2012, 11:28 AM   #16
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For 93 without a tune, all that's happening is your wallet getting lighter.
You also gain 6hp with 93 over 87... American muscle has a youtube video showing this.
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Old 12-04-2012, 12:24 PM   #17
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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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Old 12-04-2012, 01:26 PM   #18
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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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Old 12-04-2012, 05:18 PM   #19
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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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Old 12-04-2012, 07:11 PM   #20
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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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Old 12-04-2012, 07:34 PM   #21
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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
Yeah, that's not what a person will see when they dump 93 octane in their car, without a tune. They even said that they basically shut off the knock sensors so that the ECU could not ****** timing. So essentially, without a tune, you would never see this "increase" you mention. But, if you get a tuner and tune it for 93 octane, you will see some HP gains by going to 93 octane.
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Old 12-04-2012, 07:37 PM   #22
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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.
What they did on the video is not a real life situation. They shutoff the knock sensors on the car so the ECU would not ****** timing. You put 93 octane in your v6 and you will not see the same results they saw.
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Old 12-04-2012, 07:41 PM   #23
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What they did on the video is not a real life situation. They shutoff the knock sensors on the car so the ECU would not ****** timing. You put 93 octane in your v6 and you will not see the same results they saw.
I'm not refering to the vid, its just from what I've read. I will watch the vid though.
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Old 12-04-2012, 07:45 PM   #24
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I'm not refering to the vid, its just from what I've read. I will watch the vid though.
Also, I'm not doggin' 93 octane or v6's. I use 93 all the time and I love all stangs. That's not directed at you MrMike. I just wanted to clear the air in case people thought I was tossin some hate around.
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Old 12-04-2012, 08:07 PM   #25
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Also, I'm not doggin' 93 octane or v6's. I use 93 all the time and I love all stangs. That's not directed at you MrMike. I just wanted to clear the air in case people thought I was tossin some hate around.
From what I get from the vid is yes they do turn off the knock sensors so they can see the HP gains without the risk of ****** timing due to some increased knock. So no its not real world application because the knock sensors could detect higher than normal knock therefore ****** timing and nullifying any or some HP gains, but if they do not detect any excess knock you will increase HP with 93. I believe the only reason they did not use the knock sensors because they wanted a clear and definitive number in a perfect situation. And I know your not tossing any hate! Don't worry. : ) nor am I. I always value peoples opinions! Cheers.
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Old 12-04-2012, 08:12 PM   #26
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From what I get from the vid is yes they do turn off the knock sensors so they can see the HP gains without the risk of ****** timing due to some increased knock. So no its not real world application because the knock sensors could detect higher than normal knock therefore ****** timing and nullifying any or some HP gains, but if they do not detect any excess knock you will increase HP with 93. I believe the only reason they did not use the knock sensors because they wanted a clear and definitive number in a perfect situation. And I know your not tossing any hate! Don't worry. : ) nor am I. I always value peoples opinions! Cheers.
Right on!
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Old 12-04-2012, 08:32 PM   #27
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I wish leaded gas was still around 110 octane pump gas would be awesome !!
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Old 12-04-2012, 10:00 PM   #28
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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.
Isn't that why they call it variable cam timing along with the exhaust and everything running independent too?
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Old 12-05-2012, 05:24 AM   #29
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Isn't that why they call it variable cam timing along with the exhaust and everything running independent too?
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Old 12-05-2012, 08:20 AM   #30
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A 12hp gain is about a 3% increase at the crank. So, we are talking about a 1% increase at the wheels.

You will not notice the difference. It is a placebo effect.
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Old 12-05-2012, 08:37 AM   #31
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You only will feel the difference when you pay for gas

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thejohncarlson A 12hp gain is about a 3% increase at the crank. So, we are talking about a 1% increase at the wheels.

You will not notice the difference. It is a placebo effect.
I personally feel that if someone wants to pay more to fill their tank they can.I also feel that if they want more power and better MPG to substantiate the cost they need to get a tuner from AM or somebody and tune for 93 octane. Then they will feel an advantage. Just putting in 93 octane and not 87 octane in A non-tuned Mustang is just using up the money you could be saving up for A good Tuner.

Of course it is their $$$ & their Mustang so they can do whatever they want as long as they enjoy the ride.
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Old 12-05-2012, 08:41 AM   #32
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A 12hp gain is about a 3% increase at the crank. So, we are talking about a 1% increase at the wheels.

You will not notice the difference. It is a placebo effect.
Tell that to GT guys. See what you get. Js.
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Old 12-05-2012, 02:22 PM   #33
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Tell that to GT guys. See what you get. Js.
For the record I am a GT guy. (Also, I didn't even realize until just now that this was in the V6 forum. All my comments were GT related.)
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Old 12-05-2012, 03:44 PM   #34
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So would you guys use 87 tune or 93 tune
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Old 12-05-2012, 03:51 PM   #35
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For the record I am a GT guy. (Also, I didn't even realize until just now that this was in the V6 forum. All my comments were GT related.)
Lol, your always welcome herr with us v6ers!

---------- Post added at 05:51 PM ---------- Previous post was at 05:47 PM ----------

Quote:
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So would you guys use 87 tune or 93 tune
For me personally I just use 87, if you want a significant HP gain go with a tune and 93 imo. I'll throw in some 93 every once in awhile but I don't make it a habit.
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