Is it a concern when the shop that tuned your car tells you your rear 02s are off but we will give you an etest tune when the time comes. When the time comes they tell you your rear 02s are on. You drive your car and use an entire tank of gas, call the tuner and he says we are working with a tech in the USA to resolve some issues with our tunes and that the rear 02s will never show ready status, give us a week or two. After two weeks your told to drive the car more?

Are they on, or not? I dont want to drive around for 3 months only to find out they were never on and this guys lost his marbles.