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Title: audi tt ajq(8n0906018b)flash with apx ecu(8n0906018f)O2 sensor control no active Post by: alik on June 12, 2015, 04:09:47 AM I have a audi tt mk1 ajq engine code quattro with 8n0906018b ecu.i was upgraded the car with all 225 tt's part and i flash ecu with apx software.I haven't any fault code for lambda sensor but the lambda sensor control no activity show's me only 0 never 1 and car performance it's too low at high boost levels.Any solution for this?There are any different between ecu's hardware?Thank you.
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