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Message: <blockquote data-quote="DarkNinjaSG" data-source="post: 23920" data-attributes="member: 12584">Sounds good. The connector still feels like it’s sealing to the sensor good. Think it’s still good to reuse the old connector in that case?Heres what I did this morning:I started it up this morning with the sensor unplugged and let it sit for like 10 minutes and the ltft never went negative. I then plugged the sensor back in and let it idle for a while again and the ltft on both banks went negative again. With the engine fully warmed up and the sensor unplugged the engine doesn't dip to 300 rpm, but if I plug the sensor back in it does. I disconnected the fuel pressure regulator vacuum line and didn't see any fuel coming out of it (with sensor plugged in). This caused the ltft to get closer to zero cause of the vacuum leak , but when I blocked off the vacuum line it still didn't go as negative as normal. The idle vibration was worse when idling with the sensor unplugged. I'll post some videos of my ultra gauge readings when it's idling with and without the sensor plugged in.</blockquote>