• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-

upgrading injectors, what else is needed?

  • Thread starter Thread starter 98COBRA281
  • Start date Start date Dec 17, 2008

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Dec 17, 2008
#1
  • Dec 17, 2008
  • #1
i will be upgrading to 24lb injectors before i go for a dyno tune, will i have to get a maf thats calibrated for 24s, or can my tuner calibrate mine to the 24s, and will i need a bigger fuel pump? if so what would be a good one.

:SNSign:
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Dec 17, 2008
#2
  • Dec 17, 2008
  • #2
the tuner will be able to program for the injectors. as far as the pump, not sure if you need one, but the return style pumps are fairly cheap. might want to get one anyway since the car is older.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Dec 17, 2008
#3
  • Dec 17, 2008
  • #3
DBMSTNG said:
the tuner will be able to program for the injectors. as far as the pump, not sure if you need one, but the return style pumps are fairly cheap. might want to get one anyway since the car is older.
Click to expand...

thanks, what pump should i go with, and can i put the 24s in and then drive to the my tuner, its about 15 miles from my house, or will it run like complete chit?
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Dec 17, 2008
#4
  • Dec 17, 2008
  • #4
98COBRA281 said:
thanks, what pump should i go with, and can i put the 24s in and then drive to the my tuner, its about 15 miles from my house, or will it run like complete chit?
Click to expand...

being that you have a return style, you might need a fuel pressure regulator to adjust for the 24's. not 100% sure. you probably could run the injectors and run really rich, but i'd just switch them in the parking lot of the dyno before. Walboro makes a 240lph or so pump for less than $100. you can use a returnless pump also. the SVT Focus pump or the GT pump are both fairly inexpensive as well.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Dec 17, 2008
#5
  • Dec 17, 2008
  • #5
DBMSTNG said:
being that you have a return style, you might need a fuel pressure regulator to adjust for the 24's. not 100% sure. you probably could run the injectors and run really rich, but i'd just switch them in the parking lot of the dyno before. Walboro makes a 240lph or so pump for less than $100. you can use a returnless pump also. the SVT Focus pump or the GT pump are both fairly inexpensive as well.
Click to expand...

maybe ill just swich them out at my buddies house, less then a mile away, i have been lookang at fuel pumps, and there all for xx-97, 99-04, is a 98 different from a 96 or 97?

i see alot of people running the focus pump, maybe ill go with that........
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Dec 17, 2008
#6
  • Dec 17, 2008
  • #6
98COBRA281 said:
maybe ill just swich them out at my buddies house, less then a mile away, i have been lookang at fuel pumps, and there all for xx-97, 99-04, is a 98 different from a 96 or 97?

i see alot of people running the focus pump, maybe ill go with that........
Click to expand...
98 is different. Focus pump is returnless.
Go BBK or Walbro 255 intank. Only like $99 from the supply guy on corral.net. I can find it if you want.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Dec 17, 2008
#7
  • Dec 17, 2008
  • #7
so 98 is different from 96-97, and 99+?
 

DBMSTNG

I fantasize about it being BIG!
Founding Member
Apr 23, 2002
2,120
0
56
not quite here
Dec 18, 2008
#8
  • Dec 18, 2008
  • #8
CobraRed_96_GT said:
98 is different. Focus pump is returnless.
Go BBK or Walbro 255 intank. Only like $99 from the supply guy on corral.net. I can find it if you want.
Click to expand...

you can use a returnless pump on a return style system, but not a return style on a returnless. so pre 99's can use either.

98COBRA281 said:
so 98 is different from 96-97, and 99+?
Click to expand...


there should be no difference between the 96, 97, and 98's. 99+ changed to a returnless style fuel system.
 
You must log in or register to reply here.

Similar threads

K
Digital Tuning Going heads/cam/intake. Do I need a tune?
  • karhoot
  • May 11, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
41
Views
427
Fox 5.0 Mustang Tech May 14, 2026
karhoot
K
C
03 Cobra Low Fuel Pressure
  • CTsnake_03
  • Mar 17, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
5
Views
203
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
CTsnake_03
C
9
Engine Donor '00 Mountaineer meet '91 Fox
  • 91firecracker
  • May 11, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
41
Views
568
Fox 5.0 Mustang Tech May 28, 2026
91firecracker
9
Engine Hiccup at full throttle
  • keel
  • Jun 2, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
30
Views
343
Fox 5.0 Mustang Tech Jun 10, 2026
Noobz347
T
  • Locked
Digital Tuning A9l issue or something else
  • Tufgriz
  • Sep 11, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
266
Fox 5.0 Mustang Tech Sep 11, 2025
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
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?