08 F450 6.4 questions - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 04-03-2012, 02:23 PM Thread Starter
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08 F450 6.4 questions

Hey guys my brother just got a 2008 F450 King ranch with the 6.4 its got 68k on it. I don't really know much about them except like what they are capable of. So I was wondering what would be the best tuner, exhaust size and intake for the truck. Ive looked into the spartan tuning and that's really what we are leaning towards cause he heard somewhere that they use ford codes in their tuning so they have less issues also I was curious about egt's because of the twin turbo what would be a comfortable temp. and would 4" exhaust be to small I know there are other guys running it but just seams small for twins.

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post #2 of 15 Old 04-03-2012, 02:44 PM
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Spartan and H&S are the two big hitters in 6.4 tuning, can't really go wrong with either one. I run a Spartan and like it a lot, those that run H&S like them a lot , boils down to what the guy forking over the dough likes. As for EGT's ,try to keep them below about 1600 , brief periods up to 1800 won't instantly kill it by not a great idea. And 4 inch exhaust is plenty big enough for the stock turbos. Sound is the only think a 5 inch exhaust has over a 4 incher, no performance gains to be had going 5 inch.
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post #3 of 15 Old 04-04-2012, 04:17 AM
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I agree with Atonm for the most part, Spartan and H&S are good companies, H&S has a shift on the fly capability.

I run an H&S Mini very happy with the unit and performance, had some issues withtheh programming but these have been resolved with updates from H&S. Another thing H&S give you is a choice in transmission programming, see the web site.

I have installed both in peoples trucks both are good units/companies. Do your homework before ordering( Check out the companies websites etc)

EGTs, I would like to find out what Ford rates the engine at stock, I have seen responses to this question from 1200 max sustained to 1600 max sustained. After a brief e-mail exchange with PTP I set my defuel at 1250 and set up my Mini to read EGT in the display. I watch that like a hawk when towing or hauling heavy.

While many on the forum will tell you it OK to tow with a 300HP tune "do it all the time" the higher tunes will generate higher EGTs quicker. When I haul my 5500# slide in camper I run the "no power" setting to control EGT. Same when I haul a heavy trailer, I have run the Mild, Wild and Hot settings to see what happens, the hotter the tune the more fuel you are adding and the faster EGT's go up. Aluminum melts around 1200 degree F But since Aluminum is an alloy this depends on what is mixed with it make the particular alloy used in Ford/IH Pistons.

While Exhaust pipe tip temps can get into the 1000 deg mark stock and DOC temps much higher than that it is not indicitive of what is going on in the combustion chamber. However after adding a tunner there is the ability to over fuel the motor More fuel = more power=more heat=shorter life of stock equipment.

2008 F450 King Ranch 4X4
H&S Tunes
5" down pipe back exahust
4.30 L/S gears
AFE CAI
265/70R19.5 Michelins
Pure performance 4 link front suspension
Kelderman Air-Ride
FASS fuel filter
PTP EGR Delete
Train Horns under the front bumper
2013 Radio/Nav/sync upgrade


494Rwhp/975ftlbs......


Last edited by MD05; 04-04-2012 at 04:22 AM.
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post #4 of 15 Old 04-04-2012, 02:18 PM
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2010 F-250 CC/LB H&S Mini Maxx (Mild tune on 'HOT'setting with S2M trans schedule 1/2qt over), S&B intake, CCV Mod, Flo-Pro exhaust DPF/CAT, Firestone air bags front&rear. EGR coming off sooooon..
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post #5 of 15 Old 04-05-2012, 04:14 AM
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Normal Day to Day EGT:

Empty running 55-60mph 500-700, Average around 675

Running heavy 55-60mph 900-1200, average on the flats 950, big hills 1150

2008 F450 King Ranch 4X4
H&S Tunes
5" down pipe back exahust
4.30 L/S gears
AFE CAI
265/70R19.5 Michelins
Pure performance 4 link front suspension
Kelderman Air-Ride
FASS fuel filter
PTP EGR Delete
Train Horns under the front bumper
2013 Radio/Nav/sync upgrade


494Rwhp/975ftlbs......

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post #6 of 15 Old 04-05-2012, 06:01 AM
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Quote:
Originally Posted by MD05 View Post
I agree with Atonm for the most part, Spartan and H&S are good companies, H&S has a shift on the fly capability.

I run an H&S Mini very happy with the unit and performance, had some issues withtheh programming but these have been resolved with updates from H&S. Another thing H&S give you is a choice in transmission programming, see the web site.

I have installed both in peoples trucks both are good units/companies. Do your homework before ordering( Check out the companies websites etc)

EGTs, I would like to find out what Ford rates the engine at stock, I have seen responses to this question from 1200 max sustained to 1600 max sustained. After a brief e-mail exchange with PTP I set my defuel at 1250 and set up my Mini to read EGT in the display. I watch that like a hawk when towing or hauling heavy.

While many on the forum will tell you it OK to tow with a 300HP tune "do it all the time" the higher tunes will generate higher EGTs quicker. When I haul my 5500# slide in camper I run the "no power" setting to control EGT. Same when I haul a heavy trailer, I have run the Mild, Wild and Hot settings to see what happens, the hotter the tune the more fuel you are adding and the faster EGT's go up. Aluminum melts around 1200 degree F But since Aluminum is an alloy this depends on what is mixed with it make the particular alloy used in Ford/IH Pistons.

While Exhaust pipe tip temps can get into the 1000 deg mark stock and DOC temps much higher than that it is not indicitive of what is going on in the combustion chamber. However after adding a tunner there is the ability to over fuel the motor More fuel = more power=more heat=shorter life of stock equipment.
^^^^exactly what he said, I have my EGT defuel at 1250 if it hits that I start backing off. Better safe than sorry. now if you are running at the track, a few second spurt of 1400 IMO is ok, but just on the 1/4 mile, never towing.

Casey

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post #7 of 15 Old 04-05-2012, 03:16 PM Thread Starter
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thanks

Hey thanks guys for the info it helped a lot now we can start ordering

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post #8 of 15 Old 07-06-2012, 02:31 PM Thread Starter
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hey any of you guys with the 6.4l F-450s running larger than stock tires on the stock 19 1/2 wheels? if so what size and do you have any chafing issues on the back set?

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post #9 of 15 Old 07-07-2012, 05:19 PM
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Yes my Last 450 I had 285/70r 19.5 tires on it . The rears were a little close like 1/2" so I had inner wheels made for it, other wise no problems, I will most likely do the same to my new 08 450.

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post #10 of 15 Old 07-09-2012, 04:06 AM
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Quote:
Originally Posted by 02 PowerStroke 7.3 View Post
hey any of you guys with the 6.4l F-450s running larger than stock tires on the stock 19 1/2 wheels? if so what size and do you have any chafing issues on the back set?
running 265/70R's on mine with no issues loaded or unloaded. Watch the tire pressure when loading up.

2008 F450 King Ranch 4X4
H&S Tunes
5" down pipe back exahust
4.30 L/S gears
AFE CAI
265/70R19.5 Michelins
Pure performance 4 link front suspension
Kelderman Air-Ride
FASS fuel filter
PTP EGR Delete
Train Horns under the front bumper
2013 Radio/Nav/sync upgrade


494Rwhp/975ftlbs......

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