I have a 2006 Infiniti g35 coupe A/T, replaced both cats w aftermarket and all 4 denso sensors (A/F and o2) soon after I got a p2a00 code ( all sensors worked prior to changing cats (had p0430) so I changed both, I smoked the intake and exhaust, no leaks, car runs really good just poor gas mileage I did A/F reset (MAF unplug/plug) and haven’t had code since (700 miles ago) BUT B1S1 still reads low .285-.30v whether on the gas or idling, from previous .19-.23v apparently the reset put it within specs, but it does not fluctuate other than .28 and .30 unless I let off the gas and then it shoots up like it should into the .6 range .7v range idk/wtf is up with that, I put one of the original Nissan sensors back on it to see if it was the sensor and I get the same reading so I’ve ruled out a bad Denso. Mode 6 I have Green ✅ across the board , no codes, will pass emissions according to I/M just that gas mileage timing is 15°-16° at idle, I’m guessing, if there was anything wrong with the fuel, pressure or injectors, I would have a code for that or any misfiring, so if you’re familiar with this with that motor, it would be great if you could steer me in a direction that I haven’t thought of thanks in advance