2011-12.......2013-14 hp - Ford Mustang Forum
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post #1 of 14 (permalink) Old 05-03-2016 Thread Starter
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Question 2011-12.......2013-14 hp

The 11-12 GT's are rated at 412 hp. The 13-14's are rated at 420 hp. Does anybody know what Ford did to gain 8hp in the 13-14's?:

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post #2 of 14 (permalink) Old 05-03-2016
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Ya, They just changed the number on the advertising !

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post #3 of 14 (permalink) Old 05-04-2016
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The story goes...

A new piston coating
Removal of the oil squirters
Other minor engine changes

Some people will debate the oil squirters until they are blue in the face. I don't care one way or another.
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post #4 of 14 (permalink) Old 05-04-2016
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Fords great Marketing at its best or a worst?


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post #5 of 14 (permalink) Old 05-04-2016
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It's actually a totally different piston design. Having had both an early car and a very late 14 car, I can say the stock tune in my current 14 was alot better than the tune in my early build 12. I didn't pick up nearly as much from aftermarket tuning on this car as i did on the 12 and the driveability on the 14 stock was way better.

2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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post #6 of 14 (permalink) Old 05-04-2016
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Quote:
Originally Posted by 5LHO View Post
It's actually a totally different piston design.
You're right. Revised ring lands and skirt design, I think. It's been a while since I've done any reading on it. I think svtperformance.com has a really good thread about it.
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post #7 of 14 (permalink) Old 05-04-2016
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I had my old Stang in for service in 2013 and I was thinking about buying a 14. Spoke with a tech while I was there and asked that very question. For what it's worth... he said it was the coating and oil squirters mentioned above.


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post #8 of 14 (permalink) Old 05-04-2016
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Well, he ain't totally wrong, just incomplete. It is a totally different piston with a new skirt coating as well.

The squirter delete is probably most of the reason for the power increase, because stuff like that creates a lot of windage in the engine, particularly at high rpm. That and minor tune tweaks probably account for it.

2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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post #9 of 14 (permalink) Old 05-04-2016
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If I remember right there were many threads on dyno tests that showed no difference in hp. On a mass produced engine one could have an advertised hp have a plus or minus end result.


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Quote:
Originally Posted by dusman59 View Post
If I remember right there were many threads on dyno tests that showed no difference in hp. On a mass produced engine one could have an advertised hp have a plus or minus end result.

I agree and have seen many stock dyno runs and no difference between 11-12 and 13-14.


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I read somewhere it's due to ford using 91 premium results for the 11-12 and 93 premium for the 13-14.
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I suspect that the numbers were also affected by the tune that was originally installed and released for the year model. The later factory tunes were likely more refined. JMHO though...


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Quote:
Originally Posted by 2oo5GT View Post
I read somewhere it's due to ford using 91 premium results for the 11-12 and 93 premium for the 13-14.
I think that was based on someone dynoing his 2011 using 93 octane and mathematically correcting for drivetrain loss. His results was 422 hp.

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Quote:
Originally Posted by crjackson2134 View Post
The later factory tunes were likely more refined. JMHO though...
Yes and no. From what I've seen, the main spark and VCT tables are the same in all years. There are changes to spark idle, cold start and some other spark ancillary tables though.

There are many different strategies though and the strategy itself can affect driveability even if the programmed values outwardly appear to be the same.
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