_Broken_WRX_
New member
So I just had to get a new trans and in my ignorance I managed to lose my harness to my rear O2 sensor, Cruise, and traction control. Since then as soon the car hits boost it stumbles for a second until smoothing out. I watched my afrs on a pull and it seems like as soon as I give it the beans the afr spikes to about 16 (sketchy). Thats when it stumbles. After that my afr continues to fall back down to the low 11s until I let off. Ive quit driving the car in boost for now until I get that harness. Is this something just caused by not having that sensor? I thought the rear sensor was just for emissions. Possible vacuum leak?
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