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Thread: 5 wire maf/iat sensor

  1. #1
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    Default 5 wire maf/iat sensor

    hi just wondering how to get a iat sensor signal back to the ecu once the 5 wire maf/iat sensor has been removed cheers

  2. #2
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    In the case of a MAF/IAT you need to modify the cable to only remove the MAF signal to the PCM leaving the IAT lines intact in the connector. I think the process is outlined in the E38-VVE Set-up Guide.

    http://forum.efilive.com/showthread....VE-Setup-Guide
    -Adam Chant
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  3. #3
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    Yer I know this method but I have completely removed the whole Maf sensor can a iat be installed from a ls1 by using the plug and sensor from a ls1 and grafting it into the e40 harness

  4. #4
    Lifetime Member swingtan's Avatar
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    Just wire in an LS1 style sensor to the existing loom. Many have don this, but I don't have the details ATM.
    Holden VZ SS 6Lt L76 M6, 220/224 @114, 0-100kmh < 5 seconds

  5. #5
    Senior Member Dieselman's Avatar
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    Quote Originally Posted by swingtan View Post
    Just wire in an LS1 style sensor to the existing loom. Many have don this, but I don't have the details ATM.
    Pretty sure it is the two brown wires that are for your IAT sensor

  6. #6
    Senior Member Sid447's Avatar
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    Quote Originally Posted by vcls1 View Post
    hi just wondering how to get a iat sensor signal back to the ecu once the 5 wire maf/iat sensor has been removed cheers

    You need PN 12160244, Sensor Intake Air Temp.
    Also PN 12110620 Connector, Sensor Int Air.

    You then need to cut a hole in your maf-pipe slightly larger than the sensor, fit a grommet* and dab it with detergent or swarfega and push the IAT sensor into it with the relevant wires connected.
    If you have a GTS maf-pipe the hole's already there.

    * I used a 2001-2004 LS1 coolant header tank mounting grommet (same is used to mount the air filter box too on these cars).

  7. #7
    Lifetime Member Highlander's Avatar
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    go to www.eficonnection.com

    Problems solved!
    "All that is needed for the triumph of evil is that good men do nothing..."

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