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Old 03-01-2011, 09:26 PM   #11
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Originally Posted by 1turbofocus View Post
Even if you change the ECU you have to have Ford set the PATS to get it to start with the new used ECU

oh, i didnt know they worked like that.

I remember reading on craigs list one time some one was parting out a focus. They put in the post (missing ECU because some one stole it you know who you are) and from that statement i just assumed the ECU could be pulled from similar models and switched out.
DX3?.. huh?.. well ZX3 = Zetec the 05-07 has a Duratec so DX3
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Old 03-04-2011, 03:01 PM   #12
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Thanks everyone for the replys. Never had any luck finding used parts for this car anyways.. Couple new questions are the ecu codes unique? Or can I download via my pc from someone who saved there's on there pc. Long shot but never know I'll spend the $100 to get it reflashed if I must. And do need to get a mil elimanater for the rear o2 sensor(o2 cheater). I've heard sometimes after a tune the computer throws a faulty code.
Little new with tuners. My last car buildup was 67 fastback so never had to worry about this kind of stuff.

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Old 03-04-2011, 03:43 PM   #13
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Your flash tuner will shut off the rear o2. The light will come on after you leave ford but it wont affect your car
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Old 03-06-2011, 06:32 PM   #14
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Ok. Question I'm also getting the heat circuit on both o2 sensor faulty code from the tuner. So toms tunes turns off rear o2 so I just need to replace front o2 sensor before toms tune if I understand you right. Because the tune turns off rear o2 anyways?
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Old 03-06-2011, 07:01 PM   #15
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That is correct , only change the front if its bad

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