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Todd15Fastback

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Thats not true considering you can read peoples dyno results from previous stangs, compared to what they are spec'ed at.
My 01 Cobra vert made 286RWHP bone stock. This equates to 336HP at the crank.

My 03 Cobra 10th Anniversary made 373RWHP bone stock. This equates to 439HP at the crank.

These numbers were assuming 15% drivetrain loss.
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doulos4jc

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The OP can test drive one Sept. 20th, but it's not OK to sell until Oct. 27th? Yea, right. :tsk:
 

EXP Jawa

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I have to believe there is some way that manufacturers are able to fudge the numbers. For instance, the new M4 has been revealed to be making about as much HP at the wheels as its published rating. I know there are correction factors involved that result in some margin of error, but usually not 40-60HP worth...
Well, I think fudging numbers and under rating are different things. While it isn't that common for a manufacturer to actually overdeliver compared to official claims, its not unheard of. So, they're holding back to get an edge over the competition. But it still isn't standard practice. I don't see that as the bad thing that claiming more than actually producing would be (like '99 Cobra). But at the same time, as more manufacturers move to Certified power numbers, its becoming more common for HP claims to jump somewhat without actual changes.

Also, I expect that drivetrains are becoming more efficient and that old assumptions (like 15% loss to the wheels) are becoming obsolete. I can tell you that several OEMs are developing or have developed new generations of lubricants that are sustantially lower friction than the old ones, and the industry has worked hard over the last several years to produce lower friction bearings and the like. This sort of thing will have an impact on the correlation between SAE net claims and dyno results. It has to. I can imagine a scenario before too much longer where the drivetrain loss is only a few %.
 

Free Agent

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These numbers were assuming 15% drivetrain loss.
There is the key statement. Knowing actual drivetrain loss would get us a closer number. I'm sure at the time Ford could have sandbagged a little I suppose.
 

mikeyjobu

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Dave Pericak has assured us that the GT will beat the Boss -- realistically, I can't see it doing it unless the HP and weight numbers are in line: If it weighs more, the HP has gone up accordingly -- with what they've learned from the Boss "baked in" to the upcoming Coyote, I don't expect it to make significantly more than the Boss engine. Logically, the weight would have to be close to the outgoing car, and the track times better due to suspension changes, and possibly weight loss. Looking at what has been done with the new F150, I'm prepared to believe the car has lost weight despite Steeda's rumors...
 

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scottpe

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Dave Pericak has assured us that the GT will beat the Boss -- realistically, I can't see it doing it unless the HP and weight numbers are in line: If it weighs more, the HP has gone up accordingly -- with what they've learned from the Boss "baked in" to the upcoming Coyote, I don't expect it to make significantly more than the Boss engine. Logically, the weight would have to be close to the outgoing car, and the track times better due to suspension changes, and possibly weight loss. Looking at what has been done with the new F150, I'm prepared to believe the car has lost weight despite Steeda's rumors...
If you've been away from the forum for any length of time, you may have missed it, but the Dealer Source Book was leaked pretty recently that shows the curb weights. Those figures seem to indicate that the car actually may have gained a little weight, but nowhere near the figures Steeda was claiming... more like 80lbs or so for the GT. However, there are some questions about how those cars were optioned, as well as 'inconsistencies' in the numbers between the trims/transmissions that won't be cleared up until we get more information and the car hits the scales in various trims in a month or two.
 

Todd15Fastback

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There is the key statement. Knowing actual drivetrain loss would get us a closer number. I'm sure at the time Ford could have sandbagged a little I suppose.
Back in 01 and 03, that was the accepted % among car enthusiasts and reputable dyno shops. My quarter mile times and MPH backed up those #'s as well. Trying to find my timeslips but having a hard time locating them :(
 

FiveLiterDreamer

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Got a call from ford today and wanted to know if i wanted to test drive the new stang on Sept 20th at my dealer at 10:00. So I say of course!:headbang:

I am trying to have this confirmed but this is strictly a rumor from the information that I have been able to obtain. Working at a dealership in Dearborn I have not heard anything about an OK to sell date or a 2015 Mustang Preview event. Not to say that these things don't happen.
 

doulos4jc

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I am trying to have this confirmed but this is strictly a rumor from the information that I have been able to obtain. Working at a dealership in Dearborn I have not heard anything about an OK to sell date or a 2015 Mustang Preview event. Not to say that these things don't happen.
A rumor...sounds about right.
 

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Ordered mine yesterday. Ecoboost premium, PP, 6-speed, Magnetic with dark saddle interior. Would love to drive one.
Congrats!!
 
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Fomoco15

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Not a rumor and thats all i have to say for now:D
 

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:ford::ford::ford::ford::ford::ford::ford::ford:


I was just offered a Test Drive of the 2015 Mustang on September 20Th as well.

I had the choice of either 10:00am or 2:00pm...I chose 10:00am.
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