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Ecoboost has 385hp/430lb-ft with premium fuel.

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Old 03-27-2013, 04:52 PM   #31
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I know that 5.0 Mustang talk is a bit off topic here but one of the major Mustang tuners did a dyno run of a 5.0 on 87 octane, drained the tank and then ran a 93 octane dyno run. The 93 octane gave it a 10 horsepower increase.
Seeing as Ford rates the mustang @400 on reg and 412 on premium 91. Seems like most of Ford's new engines have a reg and premium rating.
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Old 03-27-2013, 05:00 PM   #32
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I think ford has been sandbagging there newer engines i think they make more power then advertised they just don't want to say it
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Old 03-27-2013, 05:03 PM   #33
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MotorTrend said it had more like 385hp stock because ford had it under rated
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Old 03-27-2013, 05:29 PM   #34
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Seeing as Ford rates the mustang @400 on reg and 412 on premium 91. Seems like most of Ford's new engines have a reg and premium rating.
Where are you getting this info? The 5.0 Mustang is released from the factory with 412 HP. Ford doesn't say "only if" you use X octane.
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Old 03-27-2013, 05:46 PM   #35
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Originally Posted by Loosescrews View Post

Where are you getting this info? The 5.0 Mustang is released from the factory with 412 HP. Ford doesn't say "only if" you use X octane.
Yes....the 11&12's have 400 on reg fuel. Not sure aboit the 13's
My pal from work has an 11 and he has the same info.
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Old 03-27-2013, 05:52 PM   #36
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Originally Posted by Loosescrews View Post
Where are you getting this info? The 5.0 Mustang is released from the factory with 412 HP. Ford doesn't say "only if" you use X octane.
http://en.wikipedia.org/wiki/Ford_Mu...d_2012_Mustang

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Old 03-27-2013, 07:01 PM   #37
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Originally Posted by PhillyLS1 View Post
http://youtu.be/adSx7MGTecE



It's not plausible for the 3.7's. It's a fact. 93 octane in the Mustang motors, both 5.0 and 3.7 will net you more power.

I have no doubt it's the same for the trucks.
5hp/4tq? Heh. I'll run the cheaper fuel.
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Old 03-28-2013, 09:30 AM   #38
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Originally Posted by Centexguy View Post
5hp/4tq? Heh. I'll run the cheaper fuel.
It's more than that. Watch the video.

Also the two engines are different (obviously) so who knows what it'll be on the trucks.
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Old 03-28-2013, 11:39 AM   #39
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You can't get your car facts from Wikipedia Let me say this again, ALL 2011 and up 5.0 Mustangs ARE rated for 412 HP from the factory. That number is actually a bit of a sandbag because they have been dynoed at 435 from the factory. You are getting confused by the automatic Camaro SS which has 400 HP compared to the manual SS with 426.
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Old 03-28-2013, 11:50 AM   #40
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Originally Posted by Loosescrews View Post
You can't get your car facts from Wikipedia Let me say this again, ALL 2011 and up 5.0 Mustangs ARE rated for 412 HP from the factory. That number is actually a bit of a sandbag because they have been dynoed at 435 from the factory. You are getting confused by the automatic Camaro SS which has 400 HP compared to the manual SS with 426.
Err, ford disagrees. Sometimes. I don't think they can keep their story straight. Here it is 420 HP.

http://media.ford.com/images/10031/2...ngGT_Specs.pdf

2014 shows 420 as well.

http://www.ford.com/cars/mustang/spe...ions/view-all/
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