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MT Asks, "Why Are EcoBoost Mustangs Getting Slower?"


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http://www.motortrend.com/news/ecoboost-mustangs-getting-slower/

In a recent comparison test, we pitted a turbocharged four-cylinder Ford Mustang EcoBoost against a turbocharged four-cylinder Chevrolet Camaro. Despite its power advantage, the heavier Mustang was 1.1 seconds slower accelerating to 60 mph and 0.6 second slower in completing a standing quarter mile. This result made it the slowest EcoBoost Mustang we’ve ever tested and the latest in a worrying trend of ever-slower EcoBoost Mustangs.

Although tested on different days, all cars were tested in the same location by the same driver. (The Mustang and Camaro from the comparison test were tested on the same day by the same driver.) Like all of our instrumented testing, we apply the SAE J1349 standardized conditions correction factor to account for variances in barometric pressure, temperature, and humidity, as does much of the industry. With the mathematical correction factor applied, all numbers are effectively on a level playing field, as if all cars were tested on the same ideal day.



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This still leaves us with the underlying question of why EcoBoost-powered Mustangs are getting slower. We reached out to Ford after our most recent test with all our data. A Ford communications representative noted that the quickest manual transmission Mustang EcoBoost we tested (the second car) was a pre-production model and speculated that it may have had a “different calibration.” He did not elaborate. He also speculated extremely hot weather could cause the computer to pull timing, but when presented with weather data showing the car was tested on a 55-degree day, he said “it should’ve been making great power.”

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Just looked at the details in the article. The "slowest" one based on 0-60 and quarter mile e/t also had the highest trap speed. That indicates it isn't short on power since trap speed is all about hp. I'd like to see 60 ft times. That would probably tell the story.

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I have seen several ecoboost Mustangs run at the track. Mid 14s is common when they are stock. Launched too hard and they lose too much traction but not launched hard enough, they bog really bad. It appears the sweet spot is hard to find. They also sound like dog flatulence. The V6 Mustangs are quicker in the hands of the average driver and sound much better, too.

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They also sound like dog flatulence. The V6 Mustangs are quicker in the hands of the average driver and sound much better, too.

 

:hysterical:

 

Excellent analogy, brucelinc! NVH characteristics of the Ecoboost 2.3L engine in Mustang leave a lot to be desired.

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Or they're purposely sandbagging the Mustang to make the shiny new Camaro look better....

 

That doesn't appear to be the case. On the contrary, MT fielded a Mustang Ecoboost equipped with Performance Package in this comparison test. This pretty much guaranteed the Mustang would win, which it did.

 

The only performance metrics in which Camaro delivered better results were those related to straight line acceleration.

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