Hey,

So I've been getting a bank 1 lean code for the past couple of weeks now and I'm having trouble diagnosing it. Today after I replaced my downstream 02 sensors I realized that they were both reading 0.000 on my scan tool. I recently replaced the mid-pipe/cat pipes with a new system that has 2 hi-flow catalytic converters. Could this be the reason I am getting no readings out of the downstream sensors?