MAF question
01-15-2007, 10:23 PM
#1
2nd Gear Member
Thread Starter
Join Date: Dec 2006
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Posts: 242
MAF question
this might sound weird. i have a cobra upper and lower intake a cobra MAF and the computer. but ive heard the injectors should be blue mine are denso orange i thought the cobra MAF was configured for the bigger injectors but mine runs its *** off so im confused. i also have an accufab FPR and the fuel rails are spliced together.
01-15-2007, 11:19 PM
#3
4th Gear Member
Join Date: Feb 2006
Location: Seattle, WA
Posts: 1,375
RE: MAF question
This subject is a little confusing so my response may seem a little long winded.
Ford NEVER calibrated any MAF meter to an injector size. ALL of the Ford MAF calibrations were done within the ECU, in a Function called the MAF Transfer. The MAF Transfer tells the computer how much airflow correlates to the voltage being sent by the MAF meter.
There is a separate setting in the Ford ECU for injector size.
The aftermarket MAF meters use some trickeryto get the car to run 'right'. Since a MAF meter cannot change the MAF Transfer (the setting within the ECU), the aftermarket MAF companies 'recalibrate' or 'rescale' the output of their meter, based on intended use (ECU and injector size).
Since you have a 93 Cobra computer and 93 Cobra MAF, your easiest option is to get some 24lb injectors.
Second best option is to convert back to an A9* ecu, 19lb injectors, and stock MAF (or 94-95 Mustang MAF).
The worst option you have is to pick up an aftermarket MAF calibrated for your X3Z computer and 24lb injectors.
Personally I would stick with the X3Z computer/MAF/MAS, and invest in the 24's.
Running 19lb injectors on an otherwise Cobra setup is not good. Make your change as soon as possible.
24lb injectors are blue.
19lb injectors are orange
This is almost by definition.
jason
Ford NEVER calibrated any MAF meter to an injector size. ALL of the Ford MAF calibrations were done within the ECU, in a Function called the MAF Transfer. The MAF Transfer tells the computer how much airflow correlates to the voltage being sent by the MAF meter.
There is a separate setting in the Ford ECU for injector size.
The aftermarket MAF meters use some trickeryto get the car to run 'right'. Since a MAF meter cannot change the MAF Transfer (the setting within the ECU), the aftermarket MAF companies 'recalibrate' or 'rescale' the output of their meter, based on intended use (ECU and injector size).
Since you have a 93 Cobra computer and 93 Cobra MAF, your easiest option is to get some 24lb injectors.
Second best option is to convert back to an A9* ecu, 19lb injectors, and stock MAF (or 94-95 Mustang MAF).
The worst option you have is to pick up an aftermarket MAF calibrated for your X3Z computer and 24lb injectors.
Personally I would stick with the X3Z computer/MAF/MAS, and invest in the 24's.
Running 19lb injectors on an otherwise Cobra setup is not good. Make your change as soon as possible.
24lb injectors are blue.
19lb injectors are orange
This is almost by definition.
jason
01-15-2007, 11:49 PM
#4
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Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
RE: MAF question
ORIGINAL: PJB
The Cobra MAF is programmed for 24 pound injectors.
Color doesnt matter but the pounds do.
The Cobra MAF is programmed for 24 pound injectors.
Color doesnt matter but the pounds do.
A COBRA MAF will work with 19# injectors because it is the same sensor that is found in a GT
01-16-2007, 03:32 AM
#9
4th Gear Member
Join Date: Feb 2006
Location: Seattle, WA
Posts: 1,375
RE: MAF question
ORIGINAL: AdderMk2
Please stop spreading incorrect information.... the tune for a cobra that allows for 24# injectors is in the computer... NOT the MAF
A COBRA MAF will work with 19# injectors because it is the same sensor that is found in a GT
ORIGINAL: PJB
The Cobra MAF is programmed for 24 pound injectors.
Color doesnt matter but the pounds do.
The Cobra MAF is programmed for 24 pound injectors.
Color doesnt matter but the pounds do.
A COBRA MAF will work with 19# injectors because it is the same sensor that is found in a GT
You mean the 94-95 GT MAF was the same as the same generation Cobra MAF.
The 93 Cobra was a different animal all together...