4 Cylinder NA and TurboThis section is for questions pertaining to stock or modified 4 cylinders, including the performance 2.3L applications
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I've got a 91 mustang 2.3 with an automatic and it's a calif model.
Would a federal model or a different year ECU from another mustang (or ranger??) be a nice cheap upgrade?
I tend to believe the earliest year that accepts the DIS and AT from a federal model would be the moost aggressive in terms of stock fuel and timing maps.
your thoughts??
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How about the difference between the California and federal models? Typically the Federal ones are a little more liberal with ignition timing and egr control.
You don't think substituting out a CA ecu for a Fed ecu might help?
They had the same computer after 1990 sooooo there would really be n gain what so ever, caly models have the same HP as the non caly models. Only they got MAF a year or two earlier
__________________
1988 Mustang LX
Ex 2.3 N/A car, built 2.3 turbo with LOTS of goodies! now I gotta find a rear end and a ps/pump XD
1989 Ranger STX 4x4
2.9L auto
274,xxx km's
tinted windows, 2 - 12" kicker comps with a 400.1X at 500watts
they BB and DB interchange as far as function goes, but they have different programs, and if I had to guess, the Federal models allow the car to run a little dirtier and get a little better hp and/or gas mileage.
On the 98-up Escort ZX2's this holds very true. Typically on that car, the older federal pcms produce more power and mileage even though Ford rates them as the "same".
If you had the answer then why even ask the question? and test it out, let us know how it goes
I don't want to re-invent the wheel if someone has already done this, and if someone had, then i wouldn't have to buy a second ecu for my car if it's not going to help.
so... if anyone out there has swapped ecu's from cali to federal (or some other box), let me know and save me the learning curve expense on this car.
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Best stock ECU for 91 2.3/AT?
