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Originally Posted by 2010-1SS-IBM
Not proof, at all. So basically you're wishing, like the Ford guys were wishing when they claimed the new Mustang would weigh 500 pounds less.
Here's what's really going to happen: The 4 will come in slightly lower, performance wise, than the V6, but the V6 will be detuned even lower than the 4, to entice people to pay the extra money for the 4.
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LOL. I am using logic. What are you using, a crystal ball? The Ford engineers have said the turbo 4 has a broader torque curve and there is no reason to believe otherwise. You don't even seem to know the difference between twin-scroll and twin-turbo.
Here's a stock Focus ST dyno, ecoboost 2.0l
There is no logical reason a 2.3l ecoboost won't have a similar curve, but with more output. Make a logical rebuttal and we'll continue.
When I say it will respond better to mods I mean exactly that. Look at any 250-300hp turbo 4 on the market and compare what it picks up with basic bolt ons to any of the N/A v6 engines around. The difference is enormous.
Quote:
Originally Posted by DGthe3
No matter how good the system is, turbo lag will still be present. Its less than it used to be but you can't fight the basic mechanics of how turbocharging works. Its based off of a feedback loop: exhaust drives turbine to draw more air, which creates more exhaust which drives the turbine even harder. Clever little system, but it takes time. No amount of light-weighting the turbo, using super bearings, or using the the turbo as the exhaust manifold will eliminate that cycle time. The only way to completely eliminate it would be to have an externally driven turbo that feeds directly into the intake (or replaces the intake itself) whose air output is tied to the engine RPM. Such devices exists, we usually call them 'super chargers'
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Almost non-existent does not equal non-existent. Turbo lag is incredibly small with modern twin-scroll, ball-bearing turbos. There is plenty of exhaust to spool at tip-in, it just takes a split second to pressurize and bam. . . boost. Drive a car with a proper twin-scroll turbo and you will see what I mean. It will always exist, but it has become negligible in performance driving. The very minor lag is made up for and then some by a vastly superior torque curve to an N/A V6.
We'll see when the car comes out, but I'd bet the ecoboost model is considerably quicker than the V6