Hello, a little feedback of the car. It's fully bolt ons with LT headers, X-Pipe and cat-back, JLT CAI, 18 Intake manifold. When we tune it first time it was ok switching between OP and CL loops with no issue. After awhile when we return it to the stock manifolds and tune the MAF curve we figured out during the datalog the car running Open loop all the time and never switched to CL loop and we found that LTFT B1 and B2 stays at 1.00 for long time and then start to read. So, why it is reading OP loop all the time? is it an issue with Upstream O2 sensors or faulty Injectors or something else? I know that we can force it to open loop from the SCT Advantage software but we didn't tuch it at all. I will apprecite if someone faced same issue to share his experience with this issue and how to solve it.