2008 fx4 Black Maxx - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 21 Old 01-10-2010, 06:12 PM Thread Starter
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2008 fx4 Black Maxx

I recently purchase a 6.4 due to my dd Lightning being in the shop. I've added a cai, dpf delete, dpf back 4" and the H&S programmer. I'm pretty happy with the power but I had it on the dyno and I'm wondering about the power it made.

No Power- 273.53 rwhp
Mild- 339.46 rwhp
Wild- 381.00 rwhp
Hot- 410.02 rwhp

Are these numbers low...or normal? Can I get more power by actually having it custom dynotuned?

2003 F150 Lightning- Whipple 3.4l 659rwhp 711rwtq @18psi on 93

2008 F250 FX4- afe stage II, 5" Flo Pro, Elite- egr delete/wastegate/4" downpipe/cfm+/ported fuel rails
Innovative XRace-12.81@103.9; H&S Hot Damn- 13.13 @ 101.4 556 rwhp (Traded In)

2011 F150 King Ranch- Custom Status Air Suspension, 3-link (lays frame)
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post #2 of 21 Old 01-10-2010, 06:15 PM
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The hot tune seems low, Another guy on here says his truck made 519 rwhp.

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post #3 of 21 Old 01-10-2010, 06:27 PM
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Mine did 531/1116 corrected on a Mustang 1100. Seems real low to me.

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post #4 of 21 Old 01-10-2010, 07:04 PM
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Those numbers are VERY low.....looks like to me that the dyno didn't load truck good at all once tuned.....The stock power seems about right, but after you added horsepower to it the numbers look really low. The Wild and Hot tunes look low for sure...not real sure on the Mild tune.

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2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #5 of 21 Old 01-10-2010, 11:20 PM Thread Starter
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So that could be the dyno and not the tune?

2003 F150 Lightning- Whipple 3.4l 659rwhp 711rwtq @18psi on 93

2008 F250 FX4- afe stage II, 5" Flo Pro, Elite- egr delete/wastegate/4" downpipe/cfm+/ported fuel rails
Innovative XRace-12.81@103.9; H&S Hot Damn- 13.13 @ 101.4 556 rwhp (Traded In)

2011 F150 King Ranch- Custom Status Air Suspension, 3-link (lays frame)
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post #6 of 21 Old 01-11-2010, 07:19 AM
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The stock setting is just about right. Most trucks will do right around 275 stock. The others, I don't know..

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post #7 of 21 Old 01-11-2010, 08:06 AM
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Those numbers for sure sound low.

That truck should easily be 500hp to the wheels on the HOT setting when the dyno is set up properly.
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post #8 of 21 Old 01-11-2010, 11:31 AM
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I am thinking a dyno flaw!

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

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post #9 of 21 Old 01-11-2010, 06:28 PM
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Not enough load on the dyno.

2008 F-250 FX4

Procomp 6" lift, MX6 Shocks
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SCT Livewire W/RCD 485 & 585
4" Flo-Pro Down Pipe
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post #10 of 21 Old 01-11-2010, 08:29 PM Thread Starter
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I know it was a dynojet and I've been told it doesn't simulate the load or however that works. Well I guess that settles it then...

Another thing I've noticed is no matter what mode I'm in I can't get more than 16.8 mpg? Also, what is the best mode to run in for efficiency?

2003 F150 Lightning- Whipple 3.4l 659rwhp 711rwtq @18psi on 93

2008 F250 FX4- afe stage II, 5" Flo Pro, Elite- egr delete/wastegate/4" downpipe/cfm+/ported fuel rails
Innovative XRace-12.81@103.9; H&S Hot Damn- 13.13 @ 101.4 556 rwhp (Traded In)

2011 F150 King Ranch- Custom Status Air Suspension, 3-link (lays frame)
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