If you are getting O2 code, you should check your O2 Sensor #2 - Voltage (V) reading in ECUtek, because you might be ground the signal ground incorrectly. I got P0138 and found the brown signal ground cable isnt ground properly to the chassis. The Normal reading should be 1.5-4.5V.
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Sportsguy83 do you find your gauge reading vs your logged reading slightly off? Mine is about 0.7 richer than gauge displayed at idle. Also can you close your fuse box after you use the add a fuse?