A9L question
- Thread starter Black70Fastback
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ECU5.0
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dont know if this will help, but jegs sells a kit that comes with 24 lb injectors, mass air and a computer. not sure of the part number but i know they sell it. i think its just the mass air meter that is calibrated not the computer...i could be wrong though. i know the cobra computer is different from the other ones though
The computer usually has nothing to do with fuel injector ratings. It is the MAF meter that has the calibration to it. A9L IS the calibration code for that particular computer. When settings or paramters change, so does the serial/model number or code. The thing that jegs sells is the cobra package but the ECU is your ordinary one - not sure if it's as aggressive as the A9l or not but I could be wrong.
black82fiveoh
Founding Member
the 93 cobra computer was supposed to use 24 #ers. Ive heard some people have used 19#ers. some worked ok, some didnt!
88GTStreetRod
Member
I have it, it is Z3X, It is calibrated for 24lb injectors and mass air calibrated at 19lbs. I ended up using a mass air calibrated for 24lbs, everyone says it will not work, but is does on my car and actually runs better.
yeah i saw the z3x on ebay. i just wondered if it is as aggresive as the a9l.
what the deal is... i picked up a MAF for a cobra for 42 pound injectors. i did plan on using the 42 pounders but. i didnt plan on the cobra computer. i didnt know that the MAF was for a cobra when i picked it up.
a 42 pound calibration for a cobra would be different than a 42 lb. calibration for a gt. correct? i have no computer now at all. so i thought it would be cheaper to buy a cobra computer rather than a gt computer and need to pay for the MAF to get recalibrated.
but... if it is not as good as the a9l, then i will just get a different MAF or get this one changed.
any of that make sence?
what the deal is... i picked up a MAF for a cobra for 42 pound injectors. i did plan on using the 42 pounders but. i didnt plan on the cobra computer. i didnt know that the MAF was for a cobra when i picked it up.
a 42 pound calibration for a cobra would be different than a 42 lb. calibration for a gt. correct? i have no computer now at all. so i thought it would be cheaper to buy a cobra computer rather than a gt computer and need to pay for the MAF to get recalibrated.
but... if it is not as good as the a9l, then i will just get a different MAF or get this one changed.
any of that make sence?
Matts89LX5.0 said:
That's what I thought, that's why it's so highly sought-after.
BTW, 42 pounders is one hell of an overkill unless you have the setup to run it. Too big of an injector size creates poor fuel atomization and performance unless your engine needs that big of an injector size.
42 lbs. is 42 lbs. When we talk of aggressiveness, we're referring to torque curves and points at which the computer will send/call for a certain air/fuel ratio and how much it will pump in response to say WOT. When manufacturers downgrade this over the years. you can say thanks to the boys at the EPA, OPEC, and various government agencies saying these things can't be that way - so they do it for emissions and various other crap. Fairly modified small blocks only need as much as 24 pounders or at most 30 pounders - unless of course you've got a heck of a setup there.
A9L is sought after due to it's slightly more favorable fuel and spark mapping in stock form over other computers, but more importantly due to it's adaptability, and the fact that many aftermarket programmers and ECU programs are compatible with it.
The mass air is what determines the injector size, not the computer. See the section in Ford Electronic Fuel Injection Modification and management. It will tell you all you need to know.
The mass air is what determines the injector size, not the computer. See the section in Ford Electronic Fuel Injection Modification and management. It will tell you all you need to know.
tim_the_toolman,
Actually there are two scalars and several functions for the injectors in the PCM.
Scalars:
Injector Slope High
Injector Slope Low
Functions:
Cranking fuel pulsewidth vs time
Cranking fuel pulsewidth vs ECT
Injector breakpoint
Injector offset vs battery voltage
Good Luck, Don
Actually there are two scalars and several functions for the injectors in the PCM.
Scalars:
Injector Slope High
Injector Slope Low
Functions:
Cranking fuel pulsewidth vs time
Cranking fuel pulsewidth vs ECT
Injector breakpoint
Injector offset vs battery voltage
Good Luck, Don
well as far as 42 pound injectors go, ill be looking at 450-500 N/A flywheel horsepower with enough injector left to give me room for a shot of a dry nitrous system later if i so desire.
it sounds like i will be getting an a9l and see what my MAF does but probably get a different one and just do it right. if its worth doing, its worth doing right. right?
it sounds like i will be getting an a9l and see what my MAF does but probably get a different one and just do it right. if its worth doing, its worth doing right. right?
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