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6.7L Power Stroke Diesel 2011-current Ford Powerstroke 6.7 L turbo diesel engine

Down shifting at 60 mph

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Old Jul 8, 2016 | 07:17 AM
  #1  
Lost_in_tx's Avatar
Lost_in_tx
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Down shifting at 60 mph

When I'm at 60 mph and go full throttle, it doesn't seem to down shift enough and the torque seems low. But when I go 1/2-3/4 throttle, I get the power I'm looking for.

Has anyone seen this before? I'll test it later today and see what gear it shifts to with both.
 
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Old Jul 8, 2016 | 08:05 AM
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ruschejj
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The EPA has emissions mandates that auto makers program in to the engine software, whenever the emissions are deemed to be excessive, they are controlled. It's one reason we have a sluggish throttle response, especially from a stop.

Turbo lag is normal, if you're not familiar, you are getting it now.

Try this. Shift to M. Accelerate normally in 1, shift to 2 at 2600rpm, roll throttle to wide open smoothly, shift to 3, 4, 5 (if you can) all at 26-2800rpm.

Or, at 60, manually drop to 4 and smoothly go to full throttle. What you feel is the best you're gonna get. Power from 2000-2800rpm is the sweet spot.
 
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Old Jul 8, 2016 | 08:13 AM
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Lost_in_tx
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Ok. It's not turbo lag, just a steady but lower power band. It just seemed odd that it felt strong without full throttle (start with 3/4) and if I work into it it's all there.
 
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Old Jul 8, 2016 | 08:16 AM
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ruschejj
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Ok, you're feeling the emissions limitations then. They won't let us have all the power right away.
 
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Old Jul 8, 2016 | 08:19 AM
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Roger that. Thanks
 
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