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Why does Ford limit the top speed of the Boss Mustang to 155mph!

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Old 12-23-2011, 05:11 PM   #1
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Default Why does Ford limit the top speed of the Boss Mustang to 155mph!

I LOVE the 2012 Boss Mustang, the car looks sweet and is a performance animal in a straighaway and turns!

That being said, why the heck does FORD limit the top speed to 155 mph, when the car has power and weight ratio to get to 180 mph if Ford did not limit this?

I think its bull chit and is one of the only few negatives I see with the car, especially for those who like to participate in events like the Texas Mile, etc., where the car would be a GAS in a straight line for an entire mile, but topping out at 155 mph really sucks.

I mean GM or Mopar does not do this. I own a C6 Z06 LS7 powered vette that has a top speed of a 198 mph (bone stock), and my every day Hemi Challenger SRT8, has a top speed of 170 mph, why the heck does Ford do this?
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Old 12-24-2011, 01:24 AM   #2
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could be because your drive train/other parts wont hold up too well at speeds of over 160, although im not at all sure how good those parts are after all it is a boss, your vette is a much different car than our stock stangs, it can handle those speeds and the manufacturer wants you to go those speeds.

my car for example can only go 120ish, and many crappy hondas etc. can go 135 ish, it's because my drivetrain would be destroyed at those speeds, but im sure ford has a few reasons besides that
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Old 12-24-2011, 10:24 AM   #3
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High performance cars in the EU are generally limited to 155, so it could be that ford is arbitrarily following suit.

Or it could be that these things are simply built down to a price. Just look at the v6 cars being limited to 112 and I've seen the video of one munching it's own driveshaft past 135.

The boss may be fast but it's no supercar. You have to pay to play. Priced a Ferrari lately?
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Old 12-24-2011, 12:24 PM   #4
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It's not dumb. There are many reasons Ford does this. First and formost 99.99% of owners are nowhere near being able to handle a car at those speeds... plus it's a street car, and there is no need for it. Insurance is also a reason. Engineering off the lot doesn't follow suit for a 200 mph car. Ford didn't design it for top speed nor straight line racing. It's a road course car, and not many road course cars need speeds over 155.

That being said, if you are running the TX mile and the like, chances are you've modded it for such use already and will know how to get around a limiter for that. So the point falls to the way side.

Also, CLAIMED top speeds are very different than real world top speeds.
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Old 12-24-2011, 07:39 PM   #5
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Hmm that makes me think about the track pack. Does the track pack do anything to the limiter?
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Old 12-24-2011, 09:16 PM   #6
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the 2013 cobra can do 200 mph, 650+ hp bone stock. most powerful production V8 i heard.

the limiter may be due to tires? i know most limiters are due to the stock tires limits
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Old 12-25-2011, 09:17 AM   #7
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In my opinion all limiters should be set at 75 - the max speed limit in the US. it would keep the idiots out of speeds that they can't handle. Too many dumb owners buy hear "that car does XXX mph" - and want to see if it's true." Then they end up dead or killing someone else. Such a waste.

If you are hitting the track, you'll already have the knowledge to shut off the limiter - and it's not an issue. Any tuner will be able to reset it (or remove it).
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Old 12-26-2011, 02:21 AM   #8
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In my opinion all limiters should be set at 75 - the max speed limit in the US. it would keep the idiots out of speeds that they can't handle. Too many dumb owners buy hear "that car does XXX mph" - and want to see if it's true." Then they end up dead or killing someone else. Such a waste.

If you are hitting the track, you'll already have the knowledge to shut off the limiter - and it's not an issue. Any tuner will be able to reset it (or remove it).
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Old 12-26-2011, 05:52 AM   #9
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I don't see the big deal with this. How often do you drive at those speeds?
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Old 12-26-2011, 01:15 PM   #10
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Hope all that is for you.

You don't like the top speed? If you just spent $40-$50,000 on a car, spend the extra $200 to have the limiter shut off. If you can't figure that out on your own, you have no business being behind the wheel at those speeds. Crawl before you walk... then learn to run with the big boys.
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Old 12-27-2011, 03:16 PM   #11
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Were really running with the big boys now!
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Old 12-27-2011, 03:45 PM   #12
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Originally Posted by LilRoush View Post
Hope all that is for you.

You don't like the top speed? If you just spent $40-$50,000 on a car, spend the extra $200 to have the limiter shut off. If you can't figure that out on your own, you have no business being behind the wheel at those speeds. Crawl before you walk... then learn to run with the big boys.
No, I don't like the top speed and I don't like voiding my factory warranty by messing with my pcm/ecm, which is the FASTEST way to void one's warranty on a new $45,000 car.

That being said, I see a 650 HP 200 mph 2013 Mustang Shelby 500 in my future, that car is really incredible and will not have a top end limiter on it and will be built to handle that speed, then I will be able to really run with the big boys down the Texas Mile!

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Old 12-27-2011, 06:09 PM   #13
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Doubt the new GT500 will do 200 in the real world without aftermarket adjustments and some aerodynamic improvements to keep it stable.
And for whatever it's worth, if you read the fine print, Ford has the option NOT to honor the warrenty if they deem you were operating the vehicle outside standard driving conditions.


Just an honest question, have you actually ever been driving at 200mph?
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Old 12-27-2011, 08:08 PM   #14
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Doubt the new GT500 will do 200 in the real world without aftermarket adjustments and some aerodynamic improvements to keep it stable.
And for whatever it's worth, if you read the fine print, Ford has the option NOT to honor the warrenty if they deem you were operating the vehicle outside standard driving conditions.


Just an honest question, have you actually ever been driving at 200mph?
No but close, in September of 2010, I drove 183 mph in a sanctioned standing mile event at a private airport in a very close friend of mine's Corvette ZR1, making 650rwhp, pullied down with a tune, and it was very stable, as the car is built to handle it as you can imagine, and it was an EXTREME RUSH!!!

At the same event, I saw 170 mph in my 2006 Corvette Z06 (LS7), dyno tuned with CAI, and in the standing mile (also very stable), so this is something I am into and REALLY ENJOY, and one of my goals is to see 200 mph in a legal and safe, HIGH speed sanctioned environment.

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Old 12-30-2011, 11:06 PM   #15
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No but close, in September of 2010, I drove 183 mph in a sanctioned standing mile event at a private airport in a very close friend of mine's Corvette ZR1, making 650rwhp, pullied down with a tune, and it was very stable, as the car is built to handle it as you can imagine, and it was an EXTREME RUSH!!!

At the same event, I saw 170 mph in my 2006 Corvette Z06 (LS7), dyno tuned with CAI, and in the standing mile (also very stable), so this is something I am into and REALLY ENJOY, and one of my goals is to see 200 mph in a legal and safe, HIGH speed sanctioned environment.
I'm right there with you on the fun of standing mile events! however, I seriously doubt the 2013 GT500 will be able to do much more that the corvette ZR1 making 650HP, I also doubt it will come without a speed limiter, the current generation GT500's are limited at 155 from the factory.
I think it's all about the tires it comes with, they may go with "y" rated tires (186MPH) and set the limiter at 175MPH.
I suspect there is a big difference between being "capable" of 200MPH+, and what comes out of the factory.
Probably with tires, tune, and pulley swap it will do it... but maybe not in one mile from a standing start.
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Old 12-31-2011, 08:50 AM   #16
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Quote:
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.... I own a C6 Z06 LS7 powered vette that has a top speed of a 198 mph (bone stock)....
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...At the same event, I saw 170 mph in my 2006 Corvette Z06 (LS7), dyno tuned with CAI...

This is what I'm getting at.
"Supposed to" or "able to" doesn't mean that they will. You're advertised "stock" top speed was a big gap away from what your actual top speed was with mods done.

The GT500 is a brick compared to the lines on the Vette. It's going to need a lot of aero improvement to pull in those numbers.
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Old 12-31-2011, 11:40 AM   #17
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This is what I'm getting at.
"Supposed to" or "able to" doesn't mean that they will. You're advertised "stock" top speed was a big gap away from what your actual top speed was with mods done.

The GT500 is a brick compared to the lines on the Vette. It's going to need a lot of aero improvement to pull in those numbers.
No, no, no, there is a HUGE difference between the top advertised and tested speed of one of these American Supercars, 198 mph for a C6 Corvette Z06, over 200 mph for a Corvette ZR1 or 2010 Viper Coupe, versus the top speed they can reach in the standing mile (which is always way less).

A bone stock C6 Z06 has been tested by many folks at 198mph; however, you need way more than a mile to reach that speed, and the standing mile does not allow it reach its max speed, just like the standing mile does not allow a stock Vette ZR1 to reach its 203 mph top speed, it needs more room, like the Authbahn, or some irresponsible driving on open stretches of road in the middle of nowwhere where people will do that (not me, too dangerous and illegal for my liking),

I understand your point that there is not too many places to ever reach the top speed of let's say 200 mph, if your not a professional driver for the BIG 3, or a professional supercar tester for a huge magazine, without REALLY breaking the law and putting innocent people at extreme risk for death, and I agree with you.

Although the new Shelby 500 looks very similar cosmetically to the 2012 model, according to the latest article in car and driver and several car sources online, Ford Engineers built this new 2013 Shelby 500 Supercar with one of their main goals to get the car to reach a top speed of 200 mph, which their testers have already achieved on a European driving testing grounds (they reached 202 mph). The Ford Engineers made a ton of changes to the car, primarily on the gearing to reach those speeds on the top end, single piece carbon fiber drive shaft to sustain vibrations at 200 mph, and significant high tech changes to the front fascia of the Mustang to allow it to reach 200 mph. These changes are already documented as the car is being sold as of May of 2013, and has already been built and tested, and yes you will be amazed and skeptical at first, but this new Stang is cabable and will have a top end speed of 200 mph (and there will be no govenor on this Stang). By having a Mustang that reaches 200 mph with the most producing factory HP engine to date, this Mustang will actually compete in sales with some 2008-10 600 HP Vipers, and some Corvettes (Z06s and ZR1) that also can achieve speeds of 200 mph. This car is the REAL DEAL!!!!!!!!!!!!!!!

Hmmm, wonder what it takes to get on the Salt Flats (?), as there is more than enough room to get any given car to its real top speed at da Salt Flats.

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Old 01-06-2012, 05:42 PM   #18
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What are the safety requirements to run 200 mph at the Texas Mile? The Mojave mile requires a cage, fire suppression system, and full racing seat and gear. They just let you take a street car and do 200 mph?
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Old 01-07-2012, 08:25 PM   #19
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What are the safety requirements to run 200 mph at the Texas Mile? The Mojave mile requires a cage, fire suppression system, and full racing seat and gear. They just let you take a street car and do 200 mph?
The TX mile requirements for a 200 mph hr car is probalby similar to the Mojave Mile.

BUT, none of the cars in question 2013 Shelby 500, Corvette ZR1 or Z06, or 2008-10 Viper SRT0, will come close to reaching 200mph on a 1 mile stretch of roadway in STOCK form, they all need more distance than a mile to reach their true top end speeds.
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Old 01-09-2012, 03:21 PM   #20
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What are the safety requirements to run 200 mph at the Texas Mile? The Mojave mile requires a cage, fire suppression system, and full racing seat and gear. They just let you take a street car and do 200 mph?
One thing to note is that the GT500 qualifies for the Showroom Stock Exotic (SSE) class as long as you are unmodified, which means that if you have the personal safety gear (firesuit, etc) you can do up to 185MPH (really 180, but they allow a +/- 5MPH margin before sternly waring you to slow down).
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Old 01-09-2012, 03:21 PM
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