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6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 18 Old 02-04-2011, 02:11 PM Thread Starter
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O BOY.

so i loaded the hotdam tune on my 08 f350 last week, was running great, however took a friend for a ride today and stepped on the gas. he stated "holy sh$$" came to a stop, gave it a little gas to get going again, driving normal this time and truck seemed like it didnt want to move.had about a 15min ride home and it seemed a little better, but still differant. WHAT DID I BREAK?
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post #2 of 18 Old 02-04-2011, 03:58 PM
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Originally Posted by jato1229 View Post
so i loaded the hotdam tune on my 08 f350 last week, was running great, however took a friend for a ride today and stepped on the gas. he stated "holy sh$$" came to a stop, gave it a little gas to get going again, driving normal this time and truck seemed like it didnt want to move.had about a 15min ride home and it seemed a little better, but still differant. WHAT DID I BREAK?
Probably just tripped it into a limp mode. It will clear itself in the next key cycle. If you mostly drive conservatively, the trans will adapt to this, and sometimes have slight hesitation when you romp on it.

Hope this helps!
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post #3 of 18 Old 02-04-2011, 05:55 PM Thread Starter
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the problum was when i was starting from a stop, going slow. i do, 4 the most part drive normal. also the power switch, is that the same as it shuting down w/ the truck. does the switch reset anything. and when i do get on it, it boggs up/down as if im letting of the gas. any thoughts.
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post #4 of 18 Old 02-05-2011, 05:37 AM Thread Starter
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Anyone else?
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post #5 of 18 Old 02-05-2011, 06:18 AM
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It sounds like what happened to me a couple of times. After driving it like a B*(^h for a while, then trying a WOT takeoff, it would buck and kick. It felt like it was running out off fuel. One time I stayed in it to see if it would work itself out, but it didnt, and gave me the wrench on my display and wouldnt shift. I shutdown and restarted and the problem was gone. Now when I drive a tad more aggressive, it would run fine. That was running the Hot Damn tune and the 45 TC lock.


09 F-250 Loaded, 4.5" CST Lift, 20x10 BMFs, 325/60r20 Terra Grapplers, Mini Maxx, 4" Flo-pro DOC/DPF Delete, S&B Instake
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post #6 of 18 Old 02-05-2011, 06:55 AM Thread Starter
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What r u running now? L-force.
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post #7 of 18 Old 02-05-2011, 07:17 AM
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Quote:
Originally Posted by jato1229 View Post
the problum was when i was starting from a stop, going slow. i do, 4 the most part drive normal. also the power switch, is that the same as it shuting down w/ the truck. does the switch reset anything. and when i do get on it, it boggs up/down as if im letting of the gas. any thoughts.
The switch on the OBDII block will just reboot the Mini Maxx itself. You likely needed to reboot the truck's computer with a key cycle. If you kicked it into a transmission limp mode, it will be stuck in 3rd, or 4th gear. Can't remember off the top of my head which, but the Mini Maxx will display what gear you are in. Was everything fine after a restart? Or are you still seeing an issue?
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post #8 of 18 Old 02-05-2011, 07:45 AM
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Please make a sig. Jato so we know what you have done?

Inadequate fuel pressure causing bog down is more prominant with the aggressive tunes. Larger boost ramps is totally dependant on the amount of pressurized fuel available and the amount of air available from the intake. It is possible that your intake isnt flowing enough air and the stock lift pump isnt cutting it either, Maybe even Both.

Last edited by Vettester; 02-05-2011 at 07:49 AM.
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post #9 of 18 Old 02-05-2011, 08:03 AM
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Wow, sound like what happen to my stock 08, It bogged down and did'nt won't to move ,
so I took it in to ford and had them look at it and boy I'm glad i had "warranty" because they said it was a high pressure fuel leak and the front end and cab had to be removed to repair.. the cost of over 2500.00 Glad I had "warranty" I hope this don't scare you....
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post #10 of 18 Old 02-05-2011, 10:05 AM
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Quote:
Originally Posted by H&S Tech View Post
If you kicked it into a transmission limp mode, it will be stuck in 3rd, or 4th gear.
It's 4th gear. It just happened to me this past week, Drove the $hit out of it on the way home, After turning the key off and back out. has not gave me any problem sense. I just thought that the truck needed more time to learn the tranny tune. didnt bouther me that much cause it didnt do it but twice.

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