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DFI and ECM Discuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.

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Old 05-19-2004, 08:30 PM   #1
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Join Date: Sep 2001
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DFI 6 ECU Info

The ECU/ECM for a TPI was a 74022, in a kit...however, a stand alone or replacement TPI ECU was part # 74046 (which I apparently have)

The calibration file for a stockish TPI 350 is the 74022.all

If the DFI is equipped to use a narrow band O2 sensor, the cal file is 74022A.all

The LT1 cal file (using the 74022 or 74046 ecu) is 74022L.all

The 74023.all is for a 383

The 74024.all is for a 400


I spoke today with Mike at DFI Tech Line, and he was VERY helpful. He stated that the above calibration files were tuned on the dyno initially with these cubic inch engines and should be GREAT base file.

The 74022A (o2 sensor kit) should be pretty spot-on for a stockish TPI 350, but will be a bit rich. Mike reminded me that these are only a base file and still need some tuning for each combo.

Also, he reminded me that a base calibration file can be made using Calmap 6.32, which is what I have and is a free download from the Accel DFI site.

HTH Someone Else....
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Old 05-19-2004, 08:30 PM
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74046, accel, cal, dfi, ecu, files, gen, lt1, manual, mike, o2, read, sensor, tuning, vi
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