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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

Power Problems

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Old Jul 3, 2013 | 07:13 PM
  #1  
JustinF08's Avatar
JustinF08
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From: Jacksonville Beach, FL
Power Problems

I have a 2008 PSD with 76,xxx miles. I installed an AFE Stage II intake, 5" MBRP stainless exhaust, and an H&S Mini Maxx tuner. I have been running the tuner on no power and occasionally the 60 H.P. tune. Sometimes when I am goin to work and the motor is cold, I'll take off slow and it seems to sputter and the boost pressure hits about 38 PSI. When it's shifts to 3rd gear it jumps hard and runs fine. No white smoke, no codes, no nothin! Any suggestions where to start? Oh and I installed all these performance parts about 6,000 miles ago along with both fuel filters. Thanks for any input.
 
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Old Jul 11, 2013 | 11:25 PM
  #2  
RM2738's Avatar
RM2738
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Joined: Sep 2010
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From: The Woodlands, TX
Honestly... I'd probably go back to stock to see if the problem is still there.

Also, did you install the most recent H&S Update?
 
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