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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.


 
 
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Old Fri, August 9th, 2024, 03:34 PM
wjb5150 wjb5150 is offline
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Default Hard shifting after PHP install

I have a 2002 F250 4X4 crew 8ft bed automatic that I bought used in 2006, its been a great truck. It currently has 103,500K miles with a new set of injectors at 98K miles.

I've had a superchip on it since 2011 and it did fine but I wanted something easier and better so I landed on the Hydra. First thing I did was to reset the PCM back to factory with the superchip and then installed the PHP. This truck doesn't have any mods and is basically stock with the exception of a 4" exhaust.

I love the PHP and can tell a huge difference in the way it runs and downshifts etc. My wife loves the pulling power for her gooseneck horse trailer.

My only issue is that in every tune it shifts extremely hard so I keep it on stock for the most part. It even shifts hard on modified stock. When in stock mode you can barely feel it shift as it's super smooth. Below are my settings for your reference, any thoughts?

PCM - VDH4
Hex code from scan - TNAA5S8
Desired calibration (installed) - TNAA4S2

Thank you!
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