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Sudden drop in fuel economy on ecoboost

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Old 11-07-2014, 07:45 PM
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Getting good...
Getting comfy...been a while since I've been to one of these...okay...continue...

Old 11-07-2014, 07:53 PM
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Yup !
Old 11-07-2014, 07:55 PM
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[QUOTE=dannofx4;3797522]Getting good...
Getting comfy...been a while since I've been to one of these...okay...continue...

[/ //////////////////QUOTE] /got a new set if strings just to be ready.
Old 11-07-2014, 08:05 PM
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Originally Posted by biff420
Sure thing keyboard commando.
I'm not going to argue with you, that's why I have not replied to you sooner.

But please just google "Turbo exhaust theory".

Its okay to be wrong ya know, It makes us all more intelligent in the end.
Old 11-07-2014, 08:19 PM
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Originally Posted by 03king
I'm not going to argue with you, that's why I have not replied to you sooner.

But please just google "Turbo exhaust theory".

Its okay to be wrong ya know, It makes us all more intelligent in the end.
LOL, yep sure thing.
Old 11-07-2014, 08:45 PM
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Originally Posted by biff420
And I think you need to understand how the pressure before and after a turbo doesn't change much. How could it (unless you have a wastegate and in that case the turbo isn't lowering pressure, a valve is ahead of the turbo). The exhaust gases pass right through the turbo, as long as the exhaust is the same size as the tube exit there is no change in back pressure. Make the exhaust too large, and you lose back pressure. Too small, you get increased back pressure.

In either case, reductions in power can occur. One from the turbo not spinning as fast, the other from the engine having to work harder to expel exhaust.

A turbo isn't much different than a person blowing on a pinwheel. Blow with your mouth wide open (low pressure) and the wheel moves a little. Blow with your lips closer together (high pressure) and the wheel moves a lot faster.
The pressure doesn't change much pre and post turbine? Wow! How the hell do you think the turbine spins? Never mind. You are right. I am wrong. Let's just move on.
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Old 11-07-2014, 08:55 PM
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Originally Posted by biff420
LOL, yep sure thing.
Ignorance is bliss
Old 11-07-2014, 08:55 PM
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my mpg is dependent on how long it takes my trans temp to get up normal. short trips with a cool down between kills my mpg.
Old 11-07-2014, 09:17 PM
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Originally Posted by 03king
Ignorance is bliss
You would know.
Old 11-07-2014, 09:19 PM
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Originally Posted by phantomblackgto
The pressure doesn't change much pre and post turbine? Wow! How the hell do you think the turbine spins? Never mind. You are right. I am wrong. Let's just move on.
You're joking right? I mean, does the engine do nothing to a turbo?


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