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Faulty ltc?

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hello guys,

im tuning a car running m150 gpr package, but i cant get the lambda reading straight!

i turned the closed loop fuel control off and fuel pressure off and pushed the car but still facing the issue. Any idea what could be the cause?

Attached Files

Is the Lambda located upstream of the turbo, so it sees increased exhaust pressure when on boost? Can you fit it downstream of the turbo so there is less pressure variation?

For closed loop lambda control... Have you calibrated the Fuel Closed Loop Period?

What is the state of Exhaust Lambda Collector Diagnostic (and other related channels like Exhaust Lambda Collector Battery Voltage and Sensor State