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Thread: Installing a real AFP sensor. Is there a pigtail already in the harness?

  1. #1
    Tuner in Training
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    Installing a real AFP sensor. Is there a pigtail already in the harness?

    I want to install a real Alcohol Fuel Percentage sensor in my 2011 flex fuel Chevy Silverado 1500 truck. Is there a pigtail hidden in the harness somewhere? I haven't been able to find one. It currently uses a "Virtual" sensor calculation to guess what the percent is, and its not very accurate.

  2. #2
    Tuning Addict 5FDP's Avatar
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    Nope.

    You have to add it to the harness/computer. I think it's like the X1 connector and pin 40 but double check all that. It needs a switched 12v power, a ground and that's it.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

  3. #3
    Advanced Tuner jsllc's Avatar
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    Depends on the ECM. Pin 5 of connector 1 on an e67.
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm

  4. #4
    Tuner in Training
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    E38 ecm