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Thread: BLM & INT go to minimum in Closed Loop -- AFR good

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  1. #1
    Carb and Points!
    Join Date
    Nov 2016
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    3

    BLM & INT go to minimum in Closed Loop -- AFR good

    All,

    I've been using TunerPro RT for years without issue tuning C4 LT-5's. While working on my first LT-1 (1993 Corvette), I could not get BLM nor INT data once the engine went into closed loop.. Open Loop locked in at 128, but everytime the car goes into closed loop, the values quickly go to minimum (108 & 64). Looked over my .ADX, but don't see anything out of order. The engine is not running rich, as validated by the Wide Band O2 sensor that is installed in the header. Anyone have any ideas? Copies of the BIN, XDF and ADX are attached. O2 Sensors working fine. Even put new ones in and still had same issue.

    Thanks!

    Steve
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    Last edited by Jss06c6; 07-05-2019 at 07:47 PM. Reason: added details

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