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93 Cobra Mass air and Injectors???

  • Thread starter Thread starter shallto
  • Start date Start date Jul 23, 2004
S

shallto

Founding Member
Jun 1, 2001
464
0
16
OBX, NC
Jul 23, 2004
#1
  • Jul 23, 2004
  • #1
Can I use these on my non cobra car? I heard that the mass air was calibrated for 19lb's and the computer was changed for 24lb injectors. Anyone know about this ?
 
S

ss93cobra

Founding Member
Apr 10, 2002
1,422
1
0
Wilmington NC
Jul 23, 2004
#2
  • Jul 23, 2004
  • #2
I've never heard that the maf was calibrated for 19's and that the computer "changed it". If you're after the larger diameter, just change the sensor on the top from your old one to the cobra one or get the injectors to match the maf sensor and then change your fuel pressure to match or get a chip thats burned for the 24lbers.
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Jul 23, 2004
#3
  • Jul 23, 2004
  • #3
ss93cobra said:
I've never heard that the maf was calibrated for 19's and that the computer "changed it". If you're after the larger diameter, just change the sensor on the top from your old one to the cobra one or get the injectors to match the maf sensor and then change your fuel pressure to match or get a chip thats burned for the 24lbers.
Click to expand...

 
S

shallto

Founding Member
Jun 1, 2001
464
0
16
OBX, NC
Jul 23, 2004
#4
  • Jul 23, 2004
  • #4
I was going to buy a cobra mass air and injector set. If it is true then it seems that it wouldn't work with my computer. I know I have heard people using Cobra mass airs with 19lb injectors.
 
S

scorp69

Founding Member
Feb 5, 2002
605
0
0
California
Jul 23, 2004
#5
  • Jul 23, 2004
  • #5
i have a 73 c&l for 19lb inj. unless you're running over 300 hp, just stick with the 19lb injectors. visionquest57@hotmail.com if interested.
 

86Cobra

Founding Member
Jun 6, 2000
2,064
1
0
Phoenix, AZ
Jul 23, 2004
#6
  • Jul 23, 2004
  • #6
In simple terms, the Cobra EEC adjusts for the 24# injectors.

The Cobra meter is "calibrated" for a Cobra EEC (X3Z) with 24# injectors. The Cobra mass air transfer function (kg/hr vs volts) happens to be similar to the stock GT (A9L) transfer function so a Cobra meter "almost" works with 19s and an A9L. But the transfer function is different so it's far less than an ideal solution.
 
S

shallto

Founding Member
Jun 1, 2001
464
0
16
OBX, NC
Jul 23, 2004
#7
  • Jul 23, 2004
  • #7
So if I had both cobra mass air and 24lb injectors would it be a problem?
 

86Cobra

Founding Member
Jun 6, 2000
2,064
1
0
Phoenix, AZ
Jul 23, 2004
#8
  • Jul 23, 2004
  • #8
Yes, because your EEC thinks it has 19# injectors. The only way, w/o a chip or tuner, to make it work right is to use the whole set - 24s, Cobra meter, and Cobra EEC.
 
S

shallto

Founding Member
Jun 1, 2001
464
0
16
OBX, NC
Jul 23, 2004
#9
  • Jul 23, 2004
  • #9
Thanks for your help.
 
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