• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

What should I set my Fuel Pressure at? Check my Combo and help me out :)

  • Thread starter Thread starter Starscream88
  • Start date Start date Jan 26, 2004

Starscream88

New Member
Mar 8, 2003
1,277
1
0
Park Ridge NJ
Jan 26, 2004
#1
  • Jan 26, 2004
  • #1
Ok I want to know what my fuel pressure should be set too,My combo is in my sig.

Obviously I want the most HP possible lol,

What would it be set from at the factory?

And what should I set it at?
 

BlackFox5.0

Founding Member
Aug 7, 2000
3,514
1
0
Massachusetts
Jan 26, 2004
#2
  • Jan 26, 2004
  • #2
I'd like to know too, with and without vacuum connected, I am going to get an AFPR very very soon, as my stock one is leaking from the seam itself.
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jan 26, 2004
#3
  • Jan 26, 2004
  • #3
i wouldnt mess with it have it dyno tuned they will run it till it runs like a top.
 

BlackFox5.0

Founding Member
Aug 7, 2000
3,514
1
0
Massachusetts
Jan 26, 2004
#4
  • Jan 26, 2004
  • #4
well what is stock supposed to be?
 
T

thinker

Founding Member
Jun 26, 2002
182
0
0
Corona, Ca
Jan 26, 2004
#5
  • Jan 26, 2004
  • #5
*bump
 

Starscream88

New Member
Mar 8, 2003
1,277
1
0
Park Ridge NJ
Jan 26, 2004
#6
  • Jan 26, 2004
  • #6
Seems like everyone wants to know
 

BlackFox5.0

Founding Member
Aug 7, 2000
3,514
1
0
Massachusetts
Jan 27, 2004
#7
  • Jan 27, 2004
  • #7
ttt
 
S

shallto

Founding Member
Jun 1, 2001
464
0
16
OBX, NC
Jan 27, 2004
#8
  • Jan 27, 2004
  • #8
I believe stock is 38. I run mine at 32 with vacuum off. But, thats to compensate for these 30 lb injectors.
 

5.0Droptop

...all those nights we shared, and you're a dude??
Special Agent Mukity-Muck Whats in Charge Round Here
May 15, 2002
1,785
1,130
233
Indiana
Jan 27, 2004
#9
  • Jan 27, 2004
  • #9
38-40 with out vacume is stock if your heads are ported and you have a cam you may need a bit more. I would start 38-40 listen for ping if no ping you should be ok.
 
You must log in or register to reply here.

Similar threads

D
Fuel Erratic Fuel Pressure 1985 GT
  • DienstXIV
  • Jan 14, 2026
  • Fox 5.0 Mustang Tech
Replies
16
Views
713
Fox 5.0 Mustang Tech Jan 16, 2026
AeroCoupe
I
1994 Cobra - Fuel Pressure Drops Revving at Idle
  • IconicSilverGT500
  • Apr 11, 2026
  • 1994 - 1995 Specific Tech
Replies
16
Views
481
1994 - 1995 Specific Tech Apr 24, 2026
Mcmahst
T
Fuel Looking for a little guidance
  • Tufgriz
  • Sep 11, 2025
  • Fox 5.0 Mustang Tech
Replies
9
Views
368
Fox 5.0 Mustang Tech Sep 12, 2025
Noobz347
T
  • Locked
Digital Tuning A9l issue or something else
  • Tufgriz
  • Sep 11, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
294
Fox 5.0 Mustang Tech Sep 11, 2025
Noobz347
G
Help with initial Microsquirt ignition setting
  • germain101
  • Nov 13, 2025
  • Digital Self-tuning Forum
Replies
3
Views
582
Digital Self-tuning Forum Nov 15, 2025
Mustang5L5
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?