Mismatched CPU?
 

Hello,

I have a question I hope someone can answer. First the ride basics 89GT, 331, X cam, GT-40X heads, exhaust, cobra intake, TB, 3:73's, pulleys, etc.
One mod I have done is the CPU. Instead of the A9L I bought fords "cobra computer" set up. You know it has the X3Z CPU 70mm "cobra" MAF and 24lb. injectors. Well, Fords literature says that the parts have been calibrated together, they can't be used separately. Pro-M said that they have there 75mm bullet MAF that works with this CPU, so I bought it. The car ran fine for a long time with the Pro-M but the car hasn't ran right for the last 6 months or so. Best to date 12.8 @108.8 everyone agrees this is off, could it be this MAF?:confused:

I don't like the x32 personally.. the A9L works great, in your case i would use the A9L with a custom burned chip...

Some other people have said they would go back to the A9L, Unfortunetly I sold the old CPU. Also I would have to go back to a correct MAF for that?

no, if you went to an A9l you will be ok..24lb mass air and 24 lb injectors and your good. all they have to be is matching sets. doesn't matter what size..

I 'll give some guys a call around here and see if any one has the CPU. Can't hurt to give it a shot. At this point the only thing the car can do is run better:D