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Discussion Starter · #1 ·
I found that Toyota has started using a different calibration in the engine ECU. This is the one that we change to for the p3190 engine fail to start. I think that this is the answer to the poor gas milage after the reprograming the ecu but I don't know for sure. We will have to wait and see. I will post as soon as I know for sure.
 
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