Fuel PSI: Tune Specific - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

 
LinkBack Thread Tools Display Modes
post #1 of 9 Old 05-08-2013, 06:54 AM Thread Starter
Compression Ignition Addict
 
pcris's Avatar
 
Join Date: Nov 2009
Location: Yorktown, VA
Posts: 545
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Fuel PSI: Tune Specific

I tried a quick search for any threads specific to this and came up with none so figured I'd start a discussion to find some answers for curiousity.

After installing my fuel psi gauge a while back, I gave looney a try from Vivian as I have only run SRL as my daily since owning the truck. I noticed a slight fuel psi drop when I loaded looney (~58psi). I was slightly concerned since it wasnt up to what it had been but after I went back to SRL, my fuel psi idles around 63psi.

My question is, I'm not familiar enough with tuning to know, if the fuel psi is related to the tuning and power output or just slightly different parameters in tuning result in slightly different pressures. Now I know you don't just increase pressure for power, but I was just curious because I feel my srl has more juice than looney and it runs higher pressure. Again, just curious if all this is related or just a parameter in the tuning that differs between tuners?

06 F250 CCSB FX4
SCT SF3
ELC | T6
CTS | EGT
EGR Delete
High Idle
Blue Spring | FP Gauge
PMM Coolant Filter
Leveled|35's
LED Reverse|Bed Rails
08 Trans Pan/Filter
4" Straight Pipe

-Philip
pcris is offline  
post #2 of 9 Old 05-08-2013, 07:12 AM
Compression Ignition Addict
 
DoubleDpsd's Avatar
 
Join Date: Mar 2007
Posts: 4,579
Thanks: 2
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 1 reviews
Fuel psi really only matters on a wot run. 63 at idle is fine. 45 at idle isnt. Idle isnt the true test of fuel psi. Wot run from dead stop or lugging up a hill tc locked going about 60mph put it to the floor that's another way to test psi drop. Obviously a larger demand on pump with a tune.

2003 centennial edition f250 4x4 ccsb auto w/blackwater long block w/arp's, 4" exhaust, airaid intake, ODawg's manifold, itp's reg return, sap modified solenoid, DC power 185amp alt, motorcraft 850cca, Warn Hubs, RS 55w 6k hid's, harley headlights, bpd 58v 6 phase, bpd water pump, dieselsite coolant filter, elc coolant, php gryphon, Xcal2 w/unlimited tow, new hfcm, glowshift fuel psi gauge, icon level kit, 20" kmc hoss, 305/55 terra grapplers TOTALED
DoubleDpsd is offline  
post #3 of 9 Old 05-08-2013, 07:55 AM
Premium Member
 
snafu!'s Avatar
 
Join Date: May 2012
Location: Anchorage
Posts: 1,469
Thanks: 19
Thanked 50 Times in 43 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 1 reviews
Fuel pressure at idle shouldn't change from one tune to the next, FP is controlled mechanically (spring). FP may differ at wot like said before on different tunes. I know Matt tries to produce the least amount of smoke so his tune my not fuel as hard at wot vs Looney. Fuel pressure around 50-55 will give you the most HP and torque.

Cameron
2006 F250 Lariat CCSB
Comp Turbo 64/88 compounds
Warren 285/100
ODAWG ported intake
R&R rods, mahle pistons, stage 2 colt cam
Built Trans
Water/Meth

Last edited by snafu!; 05-08-2013 at 08:02 AM. Reason: reworded
snafu! is offline  
post #4 of 9 Old 05-08-2013, 09:27 AM Thread Starter
Compression Ignition Addict
 
pcris's Avatar
 
Join Date: Nov 2009
Location: Yorktown, VA
Posts: 545
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thats weird though, because like you said, it is mechanical, but when running looney, it would never go over 60 at idle with srl at 63 at idle. WOT on both tunes they drop about the same, mid-low 50's.

06 F250 CCSB FX4
SCT SF3
ELC | T6
CTS | EGT
EGR Delete
High Idle
Blue Spring | FP Gauge
PMM Coolant Filter
Leveled|35's
LED Reverse|Bed Rails
08 Trans Pan/Filter
4" Straight Pipe

-Philip
pcris is offline  
post #5 of 9 Old 05-08-2013, 10:12 AM
Compression Ignition Addict
 
DoubleDpsd's Avatar
 
Join Date: Mar 2007
Posts: 4,579
Thanks: 2
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 1 reviews
You're fine.

2003 centennial edition f250 4x4 ccsb auto w/blackwater long block w/arp's, 4" exhaust, airaid intake, ODawg's manifold, itp's reg return, sap modified solenoid, DC power 185amp alt, motorcraft 850cca, Warn Hubs, RS 55w 6k hid's, harley headlights, bpd 58v 6 phase, bpd water pump, dieselsite coolant filter, elc coolant, php gryphon, Xcal2 w/unlimited tow, new hfcm, glowshift fuel psi gauge, icon level kit, 20" kmc hoss, 305/55 terra grapplers TOTALED
DoubleDpsd is offline  
post #6 of 9 Old 05-08-2013, 10:52 AM Thread Starter
Compression Ignition Addict
 
pcris's Avatar
 
Join Date: Nov 2009
Location: Yorktown, VA
Posts: 545
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by DoubleDpsd View Post
You're fine.
Ya I know I am fine, I was just stating the fact I see different pressures through different tunes, not questioning if they are too low

06 F250 CCSB FX4
SCT SF3
ELC | T6
CTS | EGT
EGR Delete
High Idle
Blue Spring | FP Gauge
PMM Coolant Filter
Leveled|35's
LED Reverse|Bed Rails
08 Trans Pan/Filter
4" Straight Pipe

-Philip
pcris is offline  
post #7 of 9 Old 05-08-2013, 11:47 AM
Powerstroke Techie

 
Lilpooh's Avatar
 
Join Date: Aug 2010
Location: Sassamansville, Pa
Posts: 9,787
Thanks: 95
Thanked 195 Times in 157 Posts
Mentioned: 3 Post(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
FWIW, my FP don't change with any tunes, race or tow.


Sent from AutoGuide.com Free App

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
Lilpooh is offline  
post #8 of 9 Old 05-08-2013, 12:13 PM
Compression Ignition Addict
 
04cr450's Avatar
 
Join Date: Jul 2012
Location: bel air, maryland
Posts: 2,121
Thanks: 4
Thanked 48 Times in 39 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 1 reviews
agreed^ I run srl tune and my FP doesnt drop below 62 psi with blue spring in it at WOT. You need a fuel pump soon.

Late 04 f350 lariat.

bpd
marty's regulated return
205/75 injects from holder's
WPE stage 3 ported intake
64.5 borg warner fmw ,compounds in the works now! Comp turbo set up
Warren comp trans
all the typical mods

Big thanks to Dale! The man is a true professional
04cr450 is offline  
post #9 of 9 Old 05-09-2013, 07:00 AM
Powerstroke.org Fanatic
 
Join Date: May 2011
Location: Amarillo
Posts: 101
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I've noticed a slight decrease in psi from IDP's tunes to Wildman's, Mainly from my tow tune to race tune
With my 190's Ill go from 60psi to abouit 52psi wot..

2005 Lariat 6.0
4" TB exhaust to 6" tip
Tuned by the Wildman
Warren 190's
AD2 sumped
Studs and gaskets
EGR delete
CCV/Zoodad
Blackcloud413 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome