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This was several years ago for me, but my understanding is before the shop removes the O2 sensors they need to flash the new tune with the codes turned off 1st before they do the actual work of removing the parts.
Otherwise when they do the work 1st, then turn the car on for the 1st time to flash the tune the car notices the rear O2 are missing and trips the codes.
If they have been turned off for sure in the tune they will eventually quit tripping the light. They do into the historical memory on the ECM, once there they take several key cycles to register they are cleared up.
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2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp
2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD
Last edited by TJay74; 07-25-2019 at 02:12 PM.
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