cobra vs gt mass air

9

95stangGT

Founding Member

Jan 13, 2002

513

0

0

Buffalo, NY

Aug 14, 2004

#1

• Aug 14, 2004

• #1

With my turbo kit I received a Pro-M mass air calibrated for 42 lb injectors but for a cobra computer. Now I have 42 lb injectors but a GT computer. What kind of problems would I see with this? I already fired it up and it idles perfect. Just wondering if it be a must thing to do before getting the car on the road. Thanks

 

AznStanger3v

Active Member

Aug 11, 2003

2,026

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47

Northern VA

Aug 14, 2004

#2

• Aug 14, 2004

• #2

i dont think youll find any problems at all. i know whenever us guys use the Tweecer, we use the cobra's computer code. our cars seem to just like the cobras comp. inside every GT is a serpent waiting to be unleashed

 

Joes95GT

New Member

Jan 23, 2003

3,132

1

0

Delaware

Aug 14, 2004

#3

• Aug 14, 2004

• #3

It's going to run fat.

I made the same mistake myself by using the Cobra computer, and 24 lb/hr injectors with a MAF calibrated for GT 24's or Cobra 30's.

Joe

 

9

95stangGT

Founding Member

Jan 13, 2002

513

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0

Buffalo, NY

Aug 14, 2004

#4

• Aug 14, 2004

• #4

Joes95GT said:

It's going to run fat.

I made the same mistake myself by using the Cobra computer, and 24 lb/hr injectors with a MAF calibrated for GT 24's or Cobra 30's.

Joe

Click to expand...

What about installing a AFPR to lower the fuel pressure then?

 

Joes95GT

New Member

Jan 23, 2003

3,132

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Delaware

Aug 14, 2004

#5

• Aug 14, 2004

• #5

95stangGT said:

What about installing a AFPR to lower the fuel pressure then?

Click to expand...

Won't matter.

Because the Cobra calibration makes up for "one-size-bigger" injectors, you're basically telling the car to act like it has 42 lb/hr injectors, but to use 36's instead. For those 36's to act like 42's, they've got to dump more fuel.

The only way to fix this besides buying the correct mass air meter is to alter the MAF curve with some kind of self tuner.

Joe