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? about MAP sensor

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  • ? about MAP sensor

    Can a MAP sensor be faulty and not throw a code. At idle with my MAF sensor unplugged my MAP readings are in the mid 30s, my timing hangs around 4* to 6*, my O2 sensors look good and the car seems to idle fine. At idle with the MAF sensor plugged in my MAP reaidng are in the mid 40s, my timing jumps around (I saw readings anywhere from -2* to 20*), and my O2 readings bottom out at 0mv to around 40mv and the car idles horrible.

    Is it possible that there is something wrong with my MAP sensor and it is conflicting with my MAF sensor readings?
    Modifications:<br />headers, throtle bod spacer, flowmaster, high flow magnaflow carsound cat, powerdyne sc with 2.9\" pulley and by-pass valve, walboro 255 fuel pump, spec stage 2 clutch, and HP Tuners

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